Guerrero made the Dodgers' 25-man opening day roster for the 2014 season.
He made his MLB debut as a pinch hitter on March 22, 2014 against the Arizona Diamondbacks, but when Diamondbacks manager Kirk Gibson countered by putting in a right-handed pitcher, Dodgers manager Don Mattingly sent in a left-hander to pinch hit for Guerrero.
Guerrero had his first official at-bat the next night, and struck out.
After the two-game opening series in Sydney, Australia,  Guerrero was optioned to the Triple-A Albuquerque Isotopes.

During a game against the Salt Lake Bees on May 20, 2014, Guerrero was involved in a dugout scuffle with Albuquerque teammate Miguel Olivo in which Olivo bit off a portion of Guerrero's ear.
He had to undergo a complicated plastic surgery operation to reattach the ear, necessitating several days in the hospital.
In 65 games for the Isotopes, he played 51 games at second base, 9 in left field, 4 at shortstop and 1 at third base.
He hit .329 with 15 homers and 49 RBI.
The Dodgers recalled him when rosters expanded on September 1.
He recorded his first Major League hit with a single to left field off of Erik Cordier of the San Francisco Giants on September 13.
He appeared in 13 games with the Dodgers, primarily as a pinch hitter though he did play in left field for a few innings.
He had just the one hit in 13 at-bats.
Guerrero made the Dodgers' 25-man opening day roster for the 2014 season. He made his MLB debut as a pinch hitter on March 22, 2014 against the Arizona Diamondbacks, but when Diamondbacks manager Kirk Gibson countered by putting in a right-handed pitcher, Dodgers manager Don Mattingly sent in a left-hander to pinch hit for Guerrero. Guerrero had his first official at-bat the next night, and struck out. After the two-game opening series in Sydney, Australia,  Guerrero was optioned to the Triple-A Albuquerque Isotopes.
During a game against the Salt Lake Bees on May 20, 2014, Guerrero was involved in a dugout scuffle with Albuquerque teammate Miguel Olivo in which Olivo bit off a portion of Guerrero's ear. He had to undergo a complicated plastic surgery operation to reattach the ear, necessitating several days in the hospital. In 65 games for the Isotopes, he played 51 games at second base, 9 in left field, 4 at shortstop and 1 at third base. He hit .329 with 15 homers and 49 RBI. The Dodgers recalled him when rosters expanded on September 1. He recorded his first Major League hit with a single to left field off of Erik Cordier of the San Francisco Giants on September 13. He appeared in 13 games with the Dodgers, primarily as a pinch hitter though he did play in left field for a few innings. He had just the one hit in 13 at-bats.
Alex Guerrero (baseball)