The second baseman was sidelined Monday night after receiving five stitches for a laceration on the top of his left hand, suffered during a postgame shower on Sunday at PNC Park. Gennett sliced open the knuckle above his middle finger while reaching for some body wash.
"I just found the right angle and sliced it open," Gennett said. "I knew [it was bad] because it started bleeding everywhere. I didn't feel any type of pain. I don't know if that's me and my tolerance, but it wasn't painful. I knew I was going to need stitches and I ended up getting five.
"I have my strength and everything, but something like that reopening and getting worse isn't what we want."
Gennett was told the stitches cannot come out for 12 days. He was examined Monday evening by Brewers physician William Raasch, at which time team officials planned to discuss whether Gennett would require a stint on the 15-day disabled list.
Hector Gomez started Monday in Gennett's place, and Luis Jimenez is also available for the Brewers, who are already one man down while center fielder Carlos Gomez recovers on the DL from a strained hamstring.
"There's always that chance [of a DL move]," manager Ron Roenicke said. "Obviously, we're at a spot now where we don't want to play short. If we feel like we need to, then that's what we'll do."
The Brewers had just been swept by the Pirates in a three-game series, dropping Milwaukee's record to 2-10 when Gennett was hurt. The team bus to the airport was delayed while Gennett received emergency treatment.
"He feels bad about it, but he feels that it's really weird," Roenicke said. "He doesn't understand how in the world you can possibly get hurt in the bathroom."
Adam McCalvy is a reporter for MLB.com. Follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.