The Red Sox are calling up their most exciting homegrown left-handed pitcher since Jon Lester.

Boston is promoting No. 28 overall prospect Payton Tolle for his Major League debut Friday against the Pirates at Fenway Park, a source told MLB.com's Ian Browne.

COMPLETE RED SOX PROSPECT COVERAGE

Taken in the second round last year out of Texas Christian, the 22-year-old southpaw sports a 3.04 ERA and an 0.99 WHIP over 91 2/3 innings across High-A, Double-A and Triple-A. His 133 strikeouts lead all Red Sox farmhands, while his 36.5 percent K rate ranks third among 288 Minor Leaguers with at least 90 innings in 2025. Mix in a solid 6.3 percent walk rate, and his 30.2 K/BB percentage is second-best among that group, trailing only fellow 2024 pick Trey Yesavage’s 30.8 mark.

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