ST. LOUIS — Koji Uehara got four outs for his second save. No crazy endings this time, either, following one night with an obstruction call and the next with Uehara's game-finishing pickoff.
The Cardinals went quickly in the ninth and now need two wins in Boston. They overcame a 3-2 deficit at home to beat Texas for the 2011 title.
"The guys know what we have to do," manager Mike Matheny said. "We have to play the game. They have to lock arms, trust each other and play the game the right way. Most of it is going to be the mentality of not buying into any kind of stats, any kind of predictions, any kind of odds. And go out and play the game."
Ortiz put Boston ahead with an RBI double in the first, hitting the first pitch after Dustin Pedroia doubled on an 0-2 curve. Ortiz singled the next time up and tied the Series record by reaching base in nine straight plate appearances.
Big Papi and the Red Sox took two of three at the NL park despite playing without a designated hitter. Ortiz became the first baseman, putting slugger Mike Napoli on the bench.
The Red Sox lead the Series despite a .205 team batting average. Ortiz has one-third of the team's 33 hits.
Ross, a graybeard on a team led by scraggly veterans, broke a 1-all tie when he hooked a drive just inside the left-field line, and the ball bounced into the seats for a go-ahead double.
"How about that? It's nice to drive in runs," Ross said. "I've got to credit the guys in front of me."
Jacoby Ellsbury later hit an RBI single, and Ross was thrown out at the plate trying to score on the play.