Tiger Tracks Prospect Weekly: Rainer's Power Surge Continues, Peck Gets the Call
By Sam Bennett ·
Tiger Tracks Prospect Weekly covers the last 7 days of action for the Tigers farm system.
Bryce Rainer Is Making High-A Pitchers Pay
Bryce Rainer (A+, SS, Rank: 4) went 6-for-29 with two home runs, four RBI, six walks, and a hit by pitch against 11 strikeouts this week at West Michigan. The counting line is messy but the underlying pattern is familiar: power and patience coexisting with a strikeout rate that refuses to come down. That 35-percent-plus K rate has been the persistent caveat on Rainer all year, and 11 punchouts in a week at High-A keeps it front and center. What complicates the narrative is the power production, which has been genuinely loud over the last 30 days: nine home runs, 18 RBI, and a .636 slugging percentage across 103 plate appearances at High-A, numbers that belong to a bat with a real offensive ceiling. He is a contact bat with a 50 hit tool and a 55 power grade, a selective hitter with a 39.7 percent swing rate, and the last month of production is running well ahead of either of those grades in the power column.
The tension in Rainer's profile has always been whether the swing-and-miss is a developmental problem or a structural one. He has hit 19 home runs combined this season, with a .369 on-base percentage at High-A driven by a 15 percent walk rate, so the approach is not broken. A contact rate of 53.8 percent over the last 30 days is genuinely concerning for a prospect expected to profile as a second-division regular at third base, where the hit tool needs to at least get to fringe-average against upper-level stuff. His 70-grade arm keeps the left side of the infield in play for now, but the defensive home is unresolved and will become more pressing if the strikeouts do not moderate. The power is loud enough to survive some contact issues; the question is how much. If September keeps looking like August, the Double-A conversation starts in earnest this offseason.
Peck Sprints from Toledo to Detroit
John Peck (AAA, SS, Rank: 21) had a week that covered a lot of ground. He went 5-for-13 with two walks and three strikeouts at Toledo before the Tigers selected his contract on August 31, making him the latest in-system name to get a September call-up. His Triple-A stint was short but striking: a .476/.542/.714 line across 24 plate appearances with a homer and three stolen bases. That sample is too thin to lean on heavily, but it followed a strong first half at Double-A Erie where he slashed .285/.328/.511 with 10 home runs and 19 steals in 256 plate appearances. He has 22 stolen bases combined across levels this year, and the 55-grade arm and 55-grade field give him legitimate utility value on the dirt.
The scouting profile projects a utility infielder ceiling, and this call-up fits that trajectory. Peck has an aggressive approach, a 5.5 percent walk rate at Erie, and a hit tool graded at 40, so the offensive floor is not high. What he offers Detroit right now is defensive versatility and baserunning contribution on a September roster that can afford to carry the profile. His MLB debut has been unremarkable through four plate appearances, but the organizational path made sense: he hit well enough at Erie to earn the Triple-A shot, then hit well enough in Toledo to earn the call. Whether he carves out an actual bench role going forward will depend on whether the bat stabilizes against big-league velocity, which the contact and pitch-recognition grades suggest will be a challenge.
Quick Hits
- Trei Cruz (AAA, CF, Rank: 41) · put together the best individual week in the system, going 13-for-29 with three doubles, a homer, six RBI, and three walks. Cruz has been significantly better over the last 30 days than his season line suggests: he is slashing .343/.415/.457 with a 12.2 percent walk rate and a contact rate that has climbed to 79.7 percent over that stretch at Toledo, compared to a season-long .252/.327/.339 at Triple-A. He is a utility bat with a 45 hit tool and 45 power grade, but this month he has looked more like his 2025 self, when he posted a .279/.411/.456 combined line across Double-A and Triple-A. The September roster spot in Detroit may not materialize with the 40-man picture uncertain, but the late-season production is a real argument for keeping him in the organizational mix.
- Izaac Pacheco (AA, 3B, Rank: 20) · drove in four runs on six hits that included a pair of home runs, drew six walks, took a hit by pitch, and struck out just once across 24 plate appearances at Erie. His 19th and 20th home runs of the season, the latter putting him at 22 combined when including his three-homer stint at West Michigan earlier in the year. The 55 power grade is earning its grade: he is slugging .600 over his last 30 days at Double-A with seven home runs in 84 plate appearances. The 34.5 percent strikeout rate at Erie this season remains the counterweight, but a 13.5 percent walk rate signals the approach is genuinely improving alongside the power output.
- Ben Jacobs (A+, LHP, Rank: 18) · was the best arm in the system this week, working five innings against 16 batters, allowing two hits and no runs, walking one, and striking out seven. He generated 12 swinging misses on 66 pitches. Over his last 30 days at High-A, Jacobs has posted a 0.44 ERA across 20.1 innings with 25 strikeouts and a 32.9 percent K rate, and the full-season ERA sits at 3.50 through 87.1 innings. The 55-grade four-seamer sitting 94-96 mph and a plus changeup with strong late tumble are the foundation; he is a back-end starter projection with a legitimate shot at moving that needle if the command (currently 45-grade) tightens further.
- Zyhir Hope (AA, CF, Rank: 2) · went 9-for-23 with a homer and four RBI while drawing three walks at Erie. Hope is a 65-grade athlete with a 55 power grade and an everyday ceiling, and his season between Tulsa and Erie totals 27 home runs and 23 stolen bases across 520 plate appearances. The last 30 days at Double-A have been less dominant than his time with the Drillers: a .235 average and 28.4 percent strikeout rate in 95 plate appearances, though the four home runs and 13.7 percent walk rate keep the profile intact. He is 21 years old and the No. 2 prospect in the system; the adjustment period at Erie is expected and does not change the trajectory.
- Max Anderson (AAA, 2B, Rank: 14) · went 8-for-29 with a double, a homer, five walks, and a hit by pitch at Toledo. A 55 hit tool and season-long .309/.394/.497 line across 437 combined plate appearances make him one of the more consistent bats in the upper minors. His contact rate of 76.6 percent over the last 30 days at Triple-A is among the best in the system, and the 12.4 percent strikeout rate this year at Toledo is a real step forward from his Double-A days. He is a bat-first second baseman with a second-division regular projection, and the production this year has done nothing to argue against that outcome.
- Cris Rodriguez (A, OF, Rank: 13) · was electric in his small Lakeland sample, racking up six RBI on six hits that included three doubles, a triple, and a homer across 15 plate appearances. Rodriguez is just 18 years old with a 60-grade power tool, and the combined slash across the Florida complex and Lakeland this season is .282/.350/.564 with 11 home runs in 217 plate appearances. The contact rate (52.7 percent) and a 40.0 percent strikeout rate at Lakeland are real flags; he is a swing-first hitter at 58.7 percent swing rate. The power is undeniably ahead of the profile right now, and there is a lot of swing-and-miss to clean up before the hit tool closes the gap.
- Kelvis Salcedo (A, RHP, Rank: 29) · worked four innings against 18 batters, giving up four hits and one earned run with two walks and seven strikeouts. He generated 15 swinging misses on 79 pitches. His last 30 days show a 38.7 percent K rate and a 6.5 percent walk rate across 15 innings at Lakeland, with the full-season ERA at 3.98. Salcedo throws a four-seam and sinker both sitting 95-97 mph, pairs them with a 55-grade slider, cutter, and a usable changeup. He is a 20-year-old with a No. 4 starter projection and a pitch mix that could move that ceiling if the command (50-grade) and delivery consistency continue to improve.
- Jude Warwick (A, 2B, Rank: 27) · went 6-for-14 with two doubles and a homer across 14 plate appearances at Lakeland. The week is a welcome result after a difficult August: over his last 30 days, he is slashing .164/.271/.328 with a 32.9 percent strikeout rate in 70 plate appearances. He is a 55-grade runner with a 40 hit tool and a 35 power grade, and the profile this season at Low-A has shown the thin margin between his speed-and-contact floor and organizational depth. The power (10 home runs combined, .364 average this week) is running above his 35 grade; the contact issues are not.
- Michael Oliveto (A, C, Rank: 25) · put up five hits and three RBI across 15 plate appearances at Lakeland without leaving the yard, but the season context carries the story. He is slashing .333/.460/.451 over his last 30 days with a 19.0 percent walk rate and a 19.0 percent strikeout rate. That patience is real: a 37.8 percent swing rate and 74.4 percent contact rate reflect a 19-year-old catcher managing the zone better than his 45 hit tool grade would predict. He is a bench projection for now with a 50 power grade and a below-average arm that creates positional risk, but the approach this month has been one of the better stories in the lower system.
- Zach MacDonald (A, OF, Rank: 38) · drew five walks and hit a solo homer in 13 plate appearances, producing three RBI on one hit. The patience has been genuine: a 20.6 percent walk rate over his last 30 days at Lakeland paired with a contact rate that has climbed to 72 percent, a real departure from his season-long contact struggles. He now has 22 home runs at Low-A this year and 35 stolen bases. The up-down projection fits a 23-year-old corner bat with a 40 hit tool, but the combination of power and on-base ability this month looks more useful than the season line suggests.
- Michael Massey (A, RHP, Rank: 47) · returned from the 60-day injured list on August 28 after being placed on it back in March, making his first appearance of 2026. In 1.2 innings he allowed two earned runs and walked two while striking out two. The stuff and command will need time to round back into shape after a months-long absence; there is no confirmed diagnosis for the original placement, so the durability picture remains unclear until he strings together a few more outings.