Andre Thornton hit the first pitch in the seventh inning over the left field fence for his 18th homer and 55th RBI and Rick Sutcliffe threw a four-hitter for 8 1/3 innings for a sweep of visiting Detroit. In the first game, Len Barker pitched a four-hitter and Rick Manning hit a two-run homer.
Jerry Ujdur stopped the Indians without a hit over the first five innings in the second game before Miguel Dilone singled to open the sixth. Mike Fischlin sacrificed Dilone to second base and Mike Hargrove singled to right to tie it at 1-1.
Thornton put Cleveland ahead in the seventh with his towering drive. Sutcliffe, who gave up Larry Herndon's 12th homer, struck out eight and walked two before being replaced by Dan Spillner with one out and one man aboard in the ninth. Spillner got the last two outs to record his eighth save.
The victory in the first game ended a five-game losing streak for the Indians, who had won 11 in a row before going 1-6 in their last seven road games.
Barker (8-3), who had not defeated the Tigers since Sept. 4, 1979, walked two and struck out 11.
Detroit's Enos Cabell was ejected from both games for arguing umpires' calls.