[6] His father is Dennis Lieberthal, who was a Major League Baseball scout for the Detroit Tigers and San Francisco Giants (among others, he signed Gabe Kapler).

He made his major league debut on June 30, 1994, at the age of 22 as the starting catcher against the Los Angeles Dodgers.

In June 1997, Lieberthal won Player of the Month award after batting .400,[11] but his season was shortened by a pelvic stress fracture injury.

He was an All Star for the first time, only the third Phillie catcher ever to receive the honor (joining Darren Daulton and Bob Boone).

[10][14] He joined Johnny Bench, Lance Parrish, and Iván Rodríguez as the only catchers to have hit 30 home runs in the same season that they won the Gold Glove Award.

A play at the plate involving a collision with Bernie Williams however, resulted in an ankle injury that knocked him out for the rest of the season.

In May 2001, Lieberthal was picked off at first base and tore his ACL and MCL and cartilage in his knee while attempting to dive back to the bag.

[10][16] Lieberthal never reached the playoffs while with the Phillies, being promoted to the majors the year after their World Series loss to Toronto, and leaving via free agency before their return to the postseason in 2007.

After playing in only 38 games in 2007 and hitting .234, Lieberthal's $1.4 million option was not picked up by the Dodgers, who instead bought out the contract for $100,000, and he became a free agent on October 30, 2007.

"[20] It was suggested that while it was unlikely that Lieberthal would choose to coach, enjoying golf and married life for the immediate future, he had expressed an interest in being a television analyst.

[21] On April 28, 2008, Lieberthal announced that he would sign a one-day contract with the Phillies on June 1, throw out the ceremonial first pitch and then officially retire.

[31][32][33][34] When it was pointed out to Lieberthal that he, Brad Ausmus, and Jesse Levis, were all catchers, and that Jewish kids were thought to be smarter than to subject themselves to the rigors of that position, he responded with a smile: "We are smart.

[6][36] Lieberthal appeared in the motion picture Summer Catch in 2001 alongside teammates Doug Glanville and Pat Burrell, as well as fellow major league baseball stars Hank Aaron, Ken Griffey Jr., and Dave Collins, among others.

Another reason for its inclusion may be Lieberthal's time spent playing for the Scranton/Wilkes-Barre Red Barons, since the show takes place in Scranton.

With Doug Glanville and Randy Wolf, Lieberthal co-hosts a celebrity billiards tournament on behalf of the Philadelphia Futures mentor program.