Sean Burke
LAB REPORTS
Sean Burke Has Been Dominant Over His Past Six Starts, Shaping up to be a Second-Half League Winner
Now that the first half of the season is officially behind us, it's a great time for us to look ahead at second-half breakouts, and who better to talk about than Chicago White Sox right-hander Sean Burke, who has recently "powered up" over the last month and a half of the season. Over his past six starts (including his start on Sunday), he's allowed six earned runs, six walks, and has racked up 47 strikeouts during that stretch (38 ⅔ innings pitched).
During this five-game stretch and prior to his outing on Sunday, where he threw 6 ⅔ shutout innings with five strikeouts against the Blue Jays, he owned an impressive 34.4 percent strikeout rate, 4.1 percent walk rate, 0.97 WHIP, and a 1.69 ERA. Those numbers, once Fangraphs adds the data, will only get better after allowing three baserunners (two hits and one walk) and no earned runs on Sunday. That is an "ace" level stretch for Burke, so what has changed?
The key here with his recent breakout is that it has coincided with a notable increase in his fastball velocity, as he’s consistently averaging 96 mph during this stretch, which is 1.6 mph more than his previous outings in 2026 and the 2025 season (94.4 mph average fastball velocity). His control has improved significantly as well, with his 4.1 percent walk rate bringing his season average down to 7.6 percent.
On the season as a whole, Burke is 7-4, has made 16 starts (20 appearances), owns a 3.20 ERA, 1.13 WHIP, and has racked up 120 strikeouts in 112 ⅓ innings pitched. Under the hood, he owns a 3.62 xERA, 3.66 FIP, and 3.57 SIERA. While his ERA estimators showcase signs of regression, it’s to be expected from a guy who had a 4.22 ERA last season and has only recently showcased signs of a velocity change that has coincided with his recent success.
Where Do We Go From Here?
As we look forward to the rest of the second half, Burke’s job security is very secure, given the nature of the White Sox rotation, which includes Davis Martin, Burke, Erick Fedde, rookie Noah Schultz, and Anthony Kay. The White Sox are competing and leading the AL Central, currently up by 1 game while sitting at 52-46. While they are likely to buy some pitching at the deadline, none of it should be a massive threat to Burke, who has looked better than all four of the other starters in that rotation.
While I don’t expect Burke to perform at this level the rest of the way, from a high-level view, his arsenal has improved, and we have seen the results follow. Right now, LFX Rankings ranks him as their SP44, which falls under the SP3 or SP4 range. I find that to be the right spot for Burke, as he is a must-roster player and is heading in the direction of a must-start player; however, the sample size is not nearly enough to get him into the top 30, but he is someone who has been showcasing upside to be a league winner down the stretch.
Explore The Lab.
