If last season Jake Lamb announced his arrival as a big-league player, early this year he seems determined to up his game. Lamb hit the go-ahead solo home run in the eighth inning and David Peralta added a run-scoring triple in the ninth to lead the Arizona Diamondbacks to a 4-2 victory over the Los Angeles Dodgers on Monday night. ''He has worked very hard to be a complete hitter, has worked very hard to be a complete player,'' said Diamondbacks manager Torey Lovullo.