Pinch hitter Pete Rose's single with the bases loaded in the 10th inning yesterday in St. Louis scored Von Hayes from third base to break a 4-4 tie and give the Philadelphia Phillies their 10th straight victory, a 6-5 triumph over the Cardinals.

The victory reduced the Phillies' magic number to three for clinching the National League East. Philadelphia leads second-place Pittsburgh, which lost to Montreal, 5-3, by four games with six games remaining for both clubs. The 10th straight triumph marked a major-league high this year and was the Phillies' seventh in a row over the Cardinals.

Pinch hitter Hayes walked to lead off the 10th and moved to second when pitcher Jeff Lahti (3-3) threw late trying for the force at second on Sixto Lezcano's sacrifice bunt. Garry Maddox sacrificed the runners up a base and Ivan DeJesus was walked intentionally to load the bases. Rose, batting for Ozzie Virgil, then bounced a single threw the right side of the infield. Joe Morgan followed with a fielder's choice grounder to score Lezcano.

The Cardinals got a run back off reliever Larry Andersen (1-0) in the ninth on an RBI single by Andy Van Slyke. Al Holland relieved and got the last two outs for his 24th save.

St. Louis tied it, 4-4, in the eighth when Willie McGee led off with a single, stole second, went to third on catcher Bo Diaz's throwing error and scored on a single by George Hendrick. One out later, David Green blooped a double and Van Slyke walked to load the bases. But Willie Hernandez came on to end the rally.

The start of the game was delayed 97 minutes by rain.

Before the game, Cardinals pitcher Joaquin Andujar was told to stay home while police investigated the cause of death of his 16-year-old live-in baby sitter. Andujar had called police about 10 a.m., telling them Carmer Vasquez, who came from the Dominican Republic to live with Andujar's family, did not look right, authorities said.

The cause of death for Vasquez has not been determined and no charges have been filed.

A police spokesman said an autopsy would be performed Monday. He said there were no signs of foul play.