Tulowitzki flied out against Giants closer Sergio Romo on Saturday. But later in the frame, Brandon Barnes delivered a two-out, two-run, inside-the-park homer to give the Rockies the victory.
"I told them when I walked in that I'd be doing everything I could to be available," Tulowitzki said. "So in the fourth or fifth [inning], I started stretching and getting in the cage and letting them know how I was feeling, that I felt good enough to hit.
"Running was questionable. I knew I couldn't play defense. But I think I went out there and battled and the guys did a good job picking me up and picking everybody up. It was a great team win."
Tulowitzki entered the day leading the National League in batting and several other categories. He knows how much he is needed.
The Rockies are already without regulars Carlos Gonzalez (left index finger), Michael Cuddyer (left shoulder) and Nolan Arenado (left middle finger) and are in a key stretch of games leading to the All-Star break. They need Tulowitzki.
He said he would try to see if he could play defense Sunday.
"I'm going to get here real early and try to do everything I can to get myself in the lineup," he said. "If I can, I'll go. If I can't, I won't."
Thomas Harding is a reporter for MLB.com. Follow him on Twitter @harding_at_mlb. This story was not subject to the approval of Major League Baseball or its clubs.