In Robertson hit .271 with 26 home runs and 72 RBIs. That year, the Pirates defeated the San Francisco Giants in the NLCS, and the Baltimore Orioles 4 games to 3 to win the World Series. In the NLCS, Robertson hit four home runs (a record later tied by Steve Garvey in 1978 and Jeffrey Leonard in 1987), three of them in the Pirates’ Game Two victory, which was played the day after Robertson's 25th birthday. He also added a double, setting the record for most total bases in a post-season game, as well as tying the record of 4 long hits a post-season game. Robertson would hit two more home runs in the World Series; one of those came in Game Three off Baltimore starter Mike Cuellar with Clemente on second and Stargell on first. Third-base coach Frank Oceak had given Robertson the bunt sign in this at-bat, but Robertson, who had no sacrifice bunts on the season and only one the year before, missed it. Television replays would show that Clemente had appeared to call time-out just before that pitch; however, Cuellar was already in his windup at the time. Steve Blass, the winning pitcher in that Game Three, was sitting next to manager Danny Murtaugh in the Pirate dugout. The pitcher offered to pay the fine if Murtaugh imposed one on Robertson for missing the bunt sign. Murtaugh did not.