Waving flag with Boston Red Sox professional team logo. Editorial 3D
The Red Sox are promoting relief prospect Ryan Zeferjahn from Double-A Portland to Triple-A Worcester, as was first reported by MassLive.com’s Christopher Smith.
Zeferjahn, 26, did not allow an earned run in seven appearances with Portland to begin the 2024 season. To go along with a 0.00 ERA and 0.73 FIP, the right-hander struck out 22 and walked only three over 13 2/3 innings in which he held opposing hitters to a .176 batting average against. He also converted all three of his save opportunities.
Have a month, Ryan Zeferjahn!
Zef finishes April with 11.2 IP, 0ER, 19K and 2BB! pic.twitter.com/RkRNI9zIIL
— Red Sox Player Development (@RedSoxPlayerDev) May 1, 2024
Among 127 pitchers in the Eastern League who have accrued at least 10 innings to this point in the season, Zeferjahn ranks sixth in strikeouts per nine innings (14.49), 20th in walks per nine innings (1.98), fifth in strikeout rate (40.7 percent), 21st in walk rate (5.6 percent), 30th in batting average against, 16th in WHIP (0.88), 29th in swinging-strike rate (14.6 percent), first in ERA, second in FIP, and fifth in xFIP (1.76), per FanGraphs.
In a recent conversation with Smith, Zeferjahn revealed that he spent most of this past offseason working out at the JetBlue Park complex in Fort Myers and lost approximately eight to 10 pounds “by dieting and hitting the weight room hard”. He now stands at 6-foot-5 and 230 pounds as a result of having “better weight” on him.
“I knew it was going to be a big year for me,” Zeferjahn explained. “I needed to show that I was putting in the work. And it’s starting to kind of pay off.
“I’m 26 now, which is not necessarily old for baseball but in the minor leagues, people think it’s old,” he continued. “But honestly, this is the best I’ve ever felt. I’ve kind of been hurt every year coming up and whatnot. Just knick-knack injuries that kind of set me back on what I really could show. This year, my body is in a better place. I’m going to show what I really have. I think I’ve done that. I know the work I’ve put in and the stuff I have. … Honestly, I’m not a prospect anymore. But I’m going to be there. I’m going to do my best to try to help the big-league club.”
Zeferjahn was originally selected by the Red Sox in the third round of the 2019 amateur draft out of Kansas. The former Jayhawak signed with Boston for $500,000 and made his professional debut as a starter but has since transitioned to the bullpen on a full-time basis. He has struggled with his command in the past, evidenced by a 5.02 ERA (5.44 FIP) in 34 outings (43 innings) for Portland in 2023, but he made strides over the winter to address that.
