Led by Franklin Arias, the Red Sox have a talented group of infield prospects in their farm system. Lost in the shuffle, perhaps, is the club’s fourth-round pick in last year’s draft: Mason White.
Selected 118th overall last July following a decorated career at the University of Arizona, White signed with the Red Sox for an at-slot $642,200. The Tucson native then debuted with Low-A Salem before working his way up to High-A Greenville, where he returned for the start of his first full professional season out of camp this spring.
Nearly four months into the 2026 campaign, White has proven to be a stabilizing force in Greenville’s lineup. The left-handed hitting 22-year-old is batting .269/.356/.512 with 14 doubles, three triples, 13 home runs, 40 RBIs, 33 runs scored, 29 walks, and 63 strikeouts in 67 games (278 plate appearances) for the Drive. He is slashing .317/.391/.537 in 46 plate appearances against lefties and .259/.349/.507 in 232 plate appearances against righties.
Among 53 South Atlantic League hitters who have made at least 275 trips to the plate this season, White ranks seventh in isolated power (.244), slugging percentage, eighth in batting average and OPS (.868), 10th in wOBA (.380), 12th in swinging-strike rate (10.1%) and wRC+ (116), 20th in on-base percentage, and 21st in strikeout rate (22.7%), according to FanGraphs.
Defensively, White has primarily split his playing time with Greenville this year between second base and shortstop. In 31 starts at second, the 5-foot-11, 180-pounder has committed two errors in 136 chances across 308 1/3 innings. In 26 starts at short, he has committed just one error in 85 chances across 228 1/3 innings. He has also made five starts at DH.
White, who turns 23 in September, is currently ranked as Boston’s No. 27 prospect by both Baseball America and SoxProspects.com. Baseball America tabbed him as the best power hitter in the Red Sox’ 2025 draft class, citing how he “swings with intent in any count or situation with firing hand speed and great torque.” SoxProspects.com, meanwhile, notes that he “hits the ball hard consistently, and can elevate to the pull side.”
Given his performance with Greenville so far this season, White should be in line for a new challenge in the form of a promotion to Double-A Portland sooner rather than later. The biggest question at that point will be how he adjusts to more advanced, higher-quality pitching in the upper minors. If he can continue to refine his hit tool, however, he could climb prospect rankings across the industry.
(Picture of Mason White: Gwinn Davis/Greenville Drive)
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