Red Sox activate Zack Kelly from paternity list, option Josh Winckowski to Triple-A Worcester

Before opening a three-game series against the Rays at Tropicana Field on Monday, the Red Sox activated reliever Zack Kelly from the paternity leave list. In a corresponding move, fellow right-hander Josh Winckowski was optioned to Triple-A Worcester, the club announced.

Kelly left the Red Sox on Friday to be with his wife, Brittany, at home in South Carolina. The couple welcomed their first child — a son named Kayden — on Saturday. Players can spend up to three days on paternity leave.

Boston originally called up Kelly from Triple-A Worcester last week. The 27-year-old former undrafted free-agent made his major-league debut against the Twins in Minnesota last Monday. He has since since allowed two earned runs on four hits, two walks, and four strikeouts over three relief appearances spanning three innings of work. That is good for an ERA of 6.00, but a much more respectable 2.45 FIP.

Winckowski, meanwhile, started in place of the injured Kutter Crawford in Sunday’s series finale against the Rangers at Fenway Park. The 24-year-old hurler allowed two earned runs on three hits, three walks, and three strikeouts over four innings of work.

Since making his big-league debut in late May, Winckowski has posted a 5.75 ERA and 5.08 FIP to go along with 41 strikeouts to 26 walks over 14 starts spanning 67 1/3 innings. He also owns a 3.83 ERA in 10 starts (47 innings) with the WooSox.

As noted by MassLive.com’s Chris Cotillo, this is the fourth time this season the Red Sox have optioned Winckowski to the minors. They can now only send him down one more time before they would need to expose him to waivers.