Socolovich became a free agent and on January 30, 2012, he signed a minor league contract with the Baltimore Orioles organization.[6]
Major League debut (2012)
He began the 2012 season playing in Triple-A with the Norfolk Tides[4] before earning his first call-up to the major leagues on July 14, 2012. At the time of his call-up, he had a 1.95 earned run average (ERA) in 24 games with Norfolk.[7] He made six appearances with the Orioles before being designated for assignment on August 14.[8] He recorded a 6.97 ERA in 10+1⁄3 innings during his time in Baltimore. With Norfolk that year, he held a 4−0 win−loss record (W−L) with a 1.90 ERA in 28 appearances and 52 innings pitched (IP), striking out 52 and walking 14 while holding opponents to a .179 batting average against.[9]
On November 21, 2013, Socolovich signed a minor league contract with the New York Mets.[11]
St. Louis Cardinals
Socolovich joined the St. Louis Cardinals organization on November 12, 2014, who optioned him to the Triple-A Memphis Redbirds of the PCL.[12] He began the season with a 12+1⁄3-inning scoreless streak. During that streak, he walked eight, struck out nine, and allowed five hits in fourteen at bats.[13]
The Cardinals called Socolovich up for the first time in 2015 on April 30.[14] He earned his first major league victory on May 3, 2015, after pitching a scoreless 14th inning against the Pittsburgh Pirates. He earned his second victory the following night, against the Chicago Cubs, who would finish two games and three games, respectively, behind first-place St. Louis in the National League Central division.[15] The Cardinals optioned him back to Memphis, where he posted a 2.48 ERA and an .165 opponent average and 0.92 WHIP in 32+2⁄3 IP for the season, and recalled him September 2.[16] At the major league level in 2015, he finished with a 1.82 ERA and 4−1 record.[17]
Beginning the 2016 season at Memphis, Socolovich authored an 11-inning scoreless streak over nine appearances through June 21.[18] The Cardinals recalled him to St. Louis on July 19 after third basemanJhonny Peralta went on the disabled list. His pitch arsenal includes a fastball, changeup, and slider. At Memphis, Socolovich was 2−5 with a 2.79 ERA in 35 games, inducing 40 strikeouts in 38+2⁄3 IP.[17]
Socolovich was designated for assignment on May 27, 2017. He was 0–1 with one save in 15 appearances, striking out 14 in 18+2⁄3 innings.[19] He elected free agency following the season on November 6.[20]
Atlanta Braves
On January 26, 2018, Socolovich was invited to spring training with the Atlanta Braves.[21] His contract was purchased by the Braves on March 30, 2018.[22] He was later designated for assignment on April 2 in order to make room for Aníbal Sánchez on the active roster.[23] Socolovich cleared waivers and was outrighted to the Gwinnett Stripers.[24] He had his contract purchased again on April 21. He was outrighted to the Gwinnett Stripers for the second time on April 26. He was again called up the Braves on May 30, and outrighted for the third time on June 3. He elected free agency on October 2, 2018.[25]
Guerreros de Oaxaca
On January 30, 2019, Socolovich signed with the Guerreros de Oaxaca of the Mexican League for the 2019 season.[26] He was released on December 19, 2019.
Retirement
On January 21, 2024, Socolovich officially announced his retirement from pitching via an Instagram post.