SCOTTSDALE, Ariz. --- Phillies prospect Andrew Knapp played the final four innings of Saturday night's Fall Stars Game at Salt River Field but did not reach base in any of his three plate appearances.

Knapp struck out in each of his first two at-bats and grounded out to the pitcher in his third. Although a catcher by trade, he played first base for the West Division team. He replaced Seattle Mariners first base prospect D.J. Peterson, who started the game, in the sixth inning of the West's 8-3 win.

Edubray Ramos, the only other member of the Phillies' seven-player Arizona Fall League contingent selected to play in Saturday's game, struck out the only two batters he faced in the ninth inning. The 22-year-old righthander displayed a fastball that ranged from 94 to 96 m.p.h. and a slider in the low-to-mid 80s.

In his first plate appearance, Knapp faced Detroit Tigers prospect Adam Ravenelle, a 6-foot-3 righthander and a fourth-round draft pick last year out of Vanderbilt. Ravenelle showcased a fastball ranging from 93 to 97 m.p.h., a cutter in the high 80s and a slider in the mid 80s. After fouling off the first pitch of the at-bat, Knapp worked the count full before whiffing on an 85 m.p.h. slider from Ravenelle.

Knapp faced righthander Corey Black, a Chicago Cubs relief prospect, in his second at-bat. He fell behind 0-2, fouling off a 97 m.p.h. fastball and whiffing on an 88 m.p.h. changeup before striking out on a 1-2 changeup down and on the inside corner of the strike zone.

In his final at-bat, Knapp grounded out to righthander Carlos Estevez, a Colorado Rockies prospect, on an 0-2 cutter.

Knapp, who turns 24 on Monday, is the most touted of the Phillies minor leaguers still playing with the Glendale Desert Dogs in the fall league. Baseball America this week ranked the former second-round draft pick the organization's fourth-best prospect following his breakout summer in double-A Reading.

Given Glendale's roster features three catchers, Knapp has played in only 10 of his team's 19 games in Arizona thus far. He has caught four of them, played first base in five and served as the designated hitter in the other. He has only seven hits in 31 at-bats (.226) and has posted a .713 on-base plus slugging percentage.

"I feel like I've done well," he said. "It's harder not playing every day. Your timing gets a little off. I don't think I've been swinging it as well as I've wanted to. I've had a lot of hard outs. My swing feels fine. It's just the timing gets off a little bit when you only play a couple times a week.

"But I feel good behind the plate. I feel like I've caught really well. And (at) first base, I haven't done anything too stupid. ... I think just getting over (to first base) and getting some experience, I'm going to get more comfortable with it every day."

Knapp was added on Wednesday to the West Division's roster for Saturday's Fall Stars Game after Houston Astros first base prospect A.J. Reed was sent home from the league.

"It's cool," Knapp said of his inclusion in the game. "This is the best of the best prospect-wise. I don't really consider myself to be one of those top guys, but to be here is pretty cool. You get some recognition. To be with a group like this is pretty humbling and a really cool experience."