The Red Sox designated hitter hurt his right Achilles rounding second base on Gonzalez's three-run homer in the eighth inning at Fenway Park and is scheduled for an MRI on Tuesday.
"I think I'll be all right," Ortiz said leaving the clubhouse Monday night. "I didn't feel any pop, so that's a good sign."
Ortiz was walking lamely as he came around to score, but appeared to be moving with greater ease in the clubhouse after icing the area.
"David's a little upset and a little sore, but it doesn't look like he pulled anything or tore anything," manager Bobby Valentine said. "It's probably going to be some days, though."
Valentine said the injury came as Ortiz tried to change speeds when he realized Gonzalez's opposite-field shot was gone.
"Just as he turned second," Valentine said. "He wasn't sure if it was going to get out, so he was going to score. It went out, he went to slow down, and pop."
Ortiz had right heel bursitis in 2011 and missed nine games because of it. According to the U.S. National Library of Medicine, heel bursitis is the swelling of the fluid-filled sac (bursa) at the back of the heel bone under the Achilles tendon.The injury comes when Ortiz, good all season, is particularly hot. He has an 11-game hit streak and has drawn at least one walk and one hit in his last 10 games. That's a Red Sox record, better than Ted Williams' nine straight games.