George Scott drove in two runs with a pair of doubles today and the Boston Red Sox capitalized on Milwaukee errors to beat the Brewers, 5-3.

Rookie Chuck Rainey, a 24-year-old right-hander making his starting debut, allowed only four hits before needing relief in the eighth inning. He surrendered a two-run homer to Cecil Cooper in the first inning and a two-out single to Charlie Moore in the second, then handcuffed theBrewers until tiring.

He received relief from Dick Drago after Milwaukee scored its third run on a double by Paul Molitor and a two-out single by Cooper, on a ground ball that just eluded second baseman Jerry Remy.

Ali five Boston runs were unearned.

The Red Sox wasted five hits and three walks before jumping on Milwaukee starter Jim Slaton for four runs in the fifth inning.

With one out, Rick Burleson lined a double to right and took third as Fred Lynn grounded out. The Red Sox then got on the board as shortstop Robin Yount threw wildly to first after handling Jim Rice's grounder, permitting Burleson to score. A walk, Scott's double to left and Jack Brohamer's ground single to right accounted for three more runs.