Definition of bush leaguer in US English:

bush leaguer

noun

North American
  • See bush league

    • ‘This has allowed the Colorado Rockies’ decent sluggers to become titans, while reducing dominant pitchers to bush-leaguers.’
    • ‘But these shake-down artists are bush-leaguers compared to the all-time King of the Shake-Down.’
    • ‘Bakula's success at turning around the hapless squad of bush-leaguers and has-beens earns them a game against the big-league club and its arrogant skipper.’