George Gilbert went to training camp with the Philadelphia Eagles in 1982 but was among the cuts as preseason rosters were reduced. He signed a contract with the USFL Philadelphia Stars in October of 1982. Gilbert was with the Stars for all three seasons of their existence. He was a reserve playing in 4 games in 1983 but moved into a starting role the following year. Gilbert started 14 games for the Stars during their first Championship season in 1984. He remained with the club in 1985 when they played out of Baltimore but his stats are unavailable. With the USFL folding after the 1985 campaign, Gilbert signed a deal with the Calgary Stampeders of the CFL in 1986 and appeared in 7 regular season games and a playoff contest there to close out his football career.
Gilbert's Champion mesh size XXL jersey with four inches of extra length has a couple of areas of significant repair work by the Stars equipment staff. The heavy game wear on the garment suggests this jersey likely dates to the 1984 season, when Gilbert started 14 games for the Stars. There is no championship game patch on this jersey as the Stars wore a brand new set of red jerseys for the title game in 1984. The sleeves have been shortened and show significant customization with an elastic inserted and sewn into them to provide a tighter fit around the arm. The spandex under the arms have been split and red cloth strips have been inserted into the jersey. There is also evidence that a longer nameplate once resided on the back of the jersey suggesting the jersey may have been used in the 1983 preseason before Gilbert joined the team.