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7/18/2014 9:46 P.M. ET

Padres call up infielder Nelson from Triple-A El Paso

SAN DIEGO -- The Padres added some versatility to their big league roster -- someone with Major League experience as well -- when they selected infielder Chris Nelson from Triple-A El Paso on Friday.

The move comes a day after infielder Irving Falu was claimed off waivers by the Brewers. Nelson is playing second base and batting seventh in Friday's lineup as the Padres open the second half at home against the Mets, continuing the second base carousel that has been constantly revolving since Jedd Gyorko went on the disabled list in early June.

Nelson is the fifth player to start at second since Gyorko's injury, joining Falu, Alexi Amarista, Brooks Conrad and Jace Peterson.

"He's a guy we hope provides a little bit of offense," said Padres manager Bud Black. "He has a little power in the bat, he's got some pull power. He's been in the big leagues, he's got good hands on defense."

Nelson, 28, posted a .293/.422/.463 line with two homers and six doubles in 24 games with El Paso. He signed a Minor League deal with the team on June 19 after opting out of his contract with the Reds. He played 63 games this season with Triple-A Louisville in Cincinnati's farm system, putting together a line of .274/.330/.363.

"It was one of those deals where I was just waiting for September if something happens," Nelson said. "It was a bit of a gamble [to opt out], but I believe in myself and my ability. You just have to take the risk sometimes."

San Diego is also keeping an eye on first baseman Tommy Medica's sore groin and the club felt that it needed an extra position player with some versatility on the bench.

Nelson has played first base, second base and third base for El Paso. He was a first-round pick by the Rockies in the 2004 First-Year Player Draft, and he is a .268 hitter over four Major League seasons with the Rockies (2010-13), Yankees ('13) and Angels ('13).

Nelson's best season in the big leagues was 2012, when he hit .301 with 104 hits, including nine home runs and 53 RBIs.

Padres sign 25 of top 27 Draft picks before deadline

SAN DIEGO -- The Padres signed 30 of their 40 selections from the 2014 First-Year Player Draft before the deadline for draftees to sign with their respective teams passed on Friday at 2 p.m. PT, including each of their first 18 selections and 25 of their top 27 picks.

Overall, San Diego signed 20 pitchers and 10 position players, including four infielders, four outfielders and two catchers. The club agreed to terms with 28 players out of college and two prep players, including second-rounder Michael Gettys, an outfielder from Gainesville (Ga.) High School.

Last month, first-round pick Trea Turner reportedly agreed to a $2.9 million bonus, which is $177,000 above the slot value for the No. 13 overall pick.

San Diego made some waves on Draft day by selecting Cleveland Browns quarterback Johnny Manziel in the 28th round. But "Johnny Football" didn't end up signing with the Padres, who have since fired general manager Josh Byrnes, who made the decision to take a flier on Manziel.

Short hops

• Second baseman Jedd Gyorko flew to Fresno on Friday to start his rehab assignment (plantar fasciitis) with Triple-A El Paso. He is scheduled to play six innings on Saturday against the Fresno Giants then a full game on Sunday.

Tommy Medica will likely avoid a trip to the disabled list, as his groin injury progressed positively over the All-Star break. He was available to pinch-hit on Friday, though Padres manager Bud Black indicated the team would pinch-run for him if he reached base.

Will Laws is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.