Navarro, a 26-year-old athlete from Lynwood, Calif., taken in the 50th round of the 2007 First-Year Player Draft, is making his third separate appearance with the big club after taking full advantage of his 14 games in May and June.
Navarro has a .297/.350/.432 slash line in 40 plate appearances and has excelled defensively at first base, left field and right field, appearing in four games at each position.
"Efren is very comfortable in left field and has shown he can play right field," Scioscia said. "At first base he's a Gold Glove-caliber player. And, offensively, he's been a tough out. His versatility has allowed him to work his way onto a big league roster."
In 72 games at Salt Lake this season, Navarro has a .326/.418/.462 line, driving in 50 runs with 19 doubles, three triples and four homers.
Lyle Spencer is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.