The rare error by the Rays proved costly Saturday in a 6-4 loss to the Minnesota Twins.
"If I just take the safe play and throw him out at first once I saw he was close, a flyball to right field and the inning is over," Jepsen said. "By the time I turned around and saw, I tried to rush it and make up time."
Trevor Plouffe tapped a bouncer back to Jepsen (1-3), whose wide throw to second pulled Beckham off the base.
Entering Saturday, Tampa Bay was tied for the fewest errors in baseball with 13.
"Anytime you try to rush something you're putting yourself in a bad position," Jepsen said. "In that situation, with one out, you get the second out and you got a righty coming up. So at that point any out is better than trying to force something."
Alex Colome lasted just 3 1-3 innings for the Rays, giving up three runs on six hits.
Colome, who had allowed eight runs in six innings in his last outing, said he was surprised to be pulled in the fourth inning.
"I don't know why the fourth inning someone went up in the bullpen," he said.
Rays: After throwing a bullpen session Friday, LHP Matt Moore (Tommy John surgery) remains on schedule to throw a simulated game Monday in extended spring training.
Twins: OF Jordan Schafer was put on the 15-day DL with a MCL sprain in his right knee. The move was retroactive to May 11. Fellow OF Shane Robinson was activated after missing four days on the family emergency list.
Rain is in the forecast for Sunday's series finale. If the game is played, the Twins will start Kyle Gibson (3-2, 2.70), who has allowed just three runs in his last 28 innings. Chris Archer (3-4, 2.59), second in the AL with 58 strikeouts, starts for the Rays.
BELLATTI SENT DOWN
"Impressive. He came up here and did everything he could possible do to showcase himself really well," manager Kevin Cash said. "I definitely envision that he's put himself in that mix for when we need arms, and I think we all understand we're going to need them throughout the course of the year. He definitely did that."
The Rays have had a rookie pitcher start 16 games this season, most in the majors. Cash says the challenge with so many rookie starters is the unknown.
"It fluctuates," he said. "You'll see a really good start out of a guy, then five days later it doesn't look like the same pitcher."