Milwaukee, Wi (WSAU) Phillies’ ace Roy Halladay has run into trouble lately – and the Milwaukee Brewers hope it continues tonight. The Philadelphia right-hander will face Brewers’ starter Shaun Marcum, as Milwaukee hopes to even its four-game home series against the Phils. The Brewers have lost three straight after falling 7-to-2 in the series’ opener last night at Miller Park. It was Philly’s fourth consecutive victory. Halladay is 16-and-5 with a two-point-four-nine E-R-A. But he’s 1-and-1 in his last four starts, and the Phillies only went 1-and-3 in those contests. Halladay gave up three runs in six innings in a no-decision against Florida last Sunday. Marcum is 12-and-5 with a three-point-one-one E-R-A. The right-hander has a stellar E-R-A of one-point-oh-four in his last five starts – but he’s only gone 2-and-2 in that stretch. Marcum is coming off a solid performance against Houston last Sunday in which he gave up one hit in seven scoreless innings, while striking out eight. Milwaukee is still eight games ahead of second-place Saint Louis in the National League Central. But what’s more important right now for the Brewers is to avoid the possibility of losing home field advantage in the first round of the playoffs – and they’re only one-and-a-half games away from giving that up. If that happens, the Brewers would have to play the red-hot Phillies in the first-round, with the Phils having the home-field advantage.