The Giants might have left all of their runs in Denver.One day after a 19-6 rout of the Colorado Rockies, San Francisco began a four-game series against the Brewers in Milwaukee on Monday and struggled on the mound and in the box at American Family Field.Landen Roupp suffered his worst start of the 2026 MLB season in the Giants’ eventual 16-2 loss, surrendering eight earned runs on eight hits with five walks and four strikeouts across four innings.Early on, it looked as though the Giants’ bats would pick up right where they left off when Matt Chapman hit a two-run home run for an early 2-0 lead in the second inning. Matt Chapman starts June off with a bang pic.twitter.com/DAChYq4ger — SF Giants on NBCS (@NBCSGiants) June 2, 2026 But it was all Brewers after that. Though Roupp got out of the first inning with no trouble, a leadoff walk to Jake Bauers in the second, which came on a challenged strike call with the count full, sent things rolling downhill for the right-hander.Roupp retired Andrew Vaughn on a fly ball to Casey Schmitt in left field for one out, but the next seven Brewers batters went like this: double, single, single, walk, double,...