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8/21/2013 8:59 P.M. ET

Tulowitzki not fazed by streaks or slumps

PHILADELPHIA -- If one asks Troy Tulowitzki about his success in the second half of seasons, he will say that's just baseball.

"I don't see it as a grind," Tulowitzki said. "I guess when you have as many injuries as I have had, you understand how great it is just to play. I love this game, I love to play it, and that's something I've learned the older I've gotten."

Tulowitzki has begun to find the groove that has made him one of the game's most feared hitters. Over his seven-game hit streak entering Wednesday night's game against the Phillies, Tulowitzki hit .407 (11-for-27) with home runs in back-to-back games against Philadelphia. That marked the fifth time he hit home runs in back-to-back games this year and 25th in his career.

"It's baseball," Tulowitzki said. "Sometimes you're comfortable, and sometimes you're off. A couple weeks ago I was off a little bit. It comes and goes. As you get older you understand that a little better."

Tulowitzki extended his hitting streak with a single in the first inning Wednesday.

Rosario flirting with first amid strong hitting

PHILADELPHIA -- When Wilin Rosario walked into the Rockies' clubhouse, a quick glance around led him to notice something different about the lineup Wednesday night against the Phillies. Rosario was indeed in the lineup, riding an 11-game hitting streak in which he had three home runs and 14 RBIs; no change there. The difference on this night was in position, as Rosario started the night at first base.

"I think down the road [we] might do something similar to what the Giants are doing with Buster Posey," Rockies manager Walt Weiss said. "Use him at first base to keep that bat in the lineup. It's a nice option to have.

"We're still moving forward with him as a catcher. I think it's just a nice option to have."

The 24-year old has also shown a propensity to hit better late in the season in just two years of service with the Rockies. His callup in 2011 aside, Rosario has been most productive after the All-Star break, including a robust .322 average in August entering Wednesday's game against the Phillies, where he homered in his first at-bat to extend his hitting streak to 12 games. A season ago, he hit .304 in August with seven home runs and .311 in September with five home runs.

"I'm just trying to see the ball well and hit it," said Rosario, who remains an aggressive swinger who has yet to walk this month. "I just play hard and go after the ball. I always have my routine and will stick to it all year. Whether I'm going bad or good, I stick to my routine."

It is a routine that will not be upset by playing first base on occasion, as Rosario continues to work on his fielding both behind the plate and at first on a daily basis.

"He likes taking ground balls over there," Weiss said. "I told him yesterday that there was a chance he would play first base tonight. We've talked about it in the past, and it's an opportunity like I said to keep that bat in the lineup."

Worth noting

Jordan Pacheco started Wednesday night's game behind the plate for the Rockies. Pacheco was recalled from Triple-A Colorado Springs on Monday and had played two games behind the plate for the Rockies this season. He also played 40 games at first before he was sent to Triple-A on July 28.

Carlos Gonzalez worked on his grip in Colorado on Wednesday afternoon. Gonzalez, who has a strained right middle finger, was initially going to swing a bat, but the Rockies opted for him to focus on his grip. He is prepared to start working on his swing in the next few days.

Todd Helton entered Wednesday's game seven hits shy of 2,500 for his career. Helton had a career average of .351 (111-for-316) with 17 home runs and 63 RBI in 89 games against the Phillies. That average was second only to Milwaukee's Ryan Braun (.386) among active players.

Michael Radano is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.