Betts homers, then exits with swollen finger

X-rays were negative on Mookie Betts’ swollen left middle finger, and he’s listed by the Dodgers as day to day after being removed in the sixth inning from Sunday’s 3-0 win over the D-backs.

Betts was injured taking an awkward swing in his fifth-inning at-bat against Merrill Kelly, even though three pitches later he took Kelly deep into the right-center swimming pool at Chase Field.

Betts reported limited flexion, but remained in the game on defense for the next two innings. He was lifted for pinch-hitter Edwin Ríos when his spot in the batting order came up leading off the top of the seventh inning.

“It swelled up during the game and we had him in there for another inning of defense,” said manager Dave Roberts. “He’s day to day. I guess we’ll know more once when we get into San Diego. There was good swelling up.”

Betts also doubled on Sunday, extending his hitting streak to seven games, and he is now 10-for-25 (.400) on this trip. He signed a 12-year, $365 million contract extension the day before Opening Day.