What started off as a promising road trip ended in disaster for the Colorado Rockies as they lost five of their last six games of a nine-game road trip. Despite some quality starting pitching during the series in Oakland, the Rockies saw their bullpen falter, resulting in two losses, capped off by an extra-inning loss on Thursday. They now head back to Coors Field to kick off a homestand that doesn’t offer much respite with two of the best teams in baseball coming to town. The Rockies first opponent will be the Philadelphia Phillies who own the best record in baseball.

Here are a few things to keep an eye on in Colorado this weekend.

Pitching Probables

5/24: Ty Blach (1-2 5.14 ERA) vs.  Cristopher Sánchez (2-3, 3.31 ERA)

5/25: Dakota Hudson (1-7, 5.89 ERA) vs. Aaron Nola (6-2, 3.02 ERA)

5/26: Cal Quantrill (3-3, 3.59 ERA) vs Ranger Suárez (9-0, 1.36 ERA)

Bullpen shuffle

Prior to the game on Friday, the Rockies announced that they selected the contracts of John Curtiss and Matt Carasiti while optioning Peter Lamber to Triple-A while designating Matt Koch for assignment and placing Kyle Freeland on the 60-day injured list. The moves come in light of the bullpen collapse the Rockies faced in the most recent series against the Athletics and the road trip as a whole. While the starting pitching has been generally favorable, the Rockies’ struggles have stemmed from the bullpen’s inability to get outs. In the Oakland series, the bullpen worked 12 2/3 innings while walking nine batters and coughing up 13 earned runs. The rotation had only given up three earned runs and three walks over 20 innings of work. With the wild nature of Coors Field and a high-powered Phillies offense, the bullpen and its newcomers are going to have to prove they can right the ship and hold on to leads.

The City of Not so Brotherly Love

When last these teams met, the Phillies were scuffling to begin the season as were the Rockies. The series was relatively close, with one game going extra-innings, but the Phillies ended up pulling off the sweep. It really could be the point that helped the Phillies gain momentum as they have only lost six games since sweeping the Rockies. They have one of the best rotations in baseball with Ranger Suárez leading the way with a phenomenal season. He aims for his 10th win of the year during the series. What’s been a boon for the Phillies is their offensive prowess. They have seven players with 20-plus RBI and while the power hasn’t been as prevalent this season, Bryce Harper has continued to heat up more and more since struggling at the start of the year. Can they find more momentum in the hitter-friendly confines of Coors Field?