Among other errors on the bowling score sheet, Al is shown with a 140 in the 7th frame. The scorecard shows he bowled a strike in the 8th and a spare in the 9th. In the 10th frame, with the game on the line, he bowls 2 strikes and a zero, which would give him a total score of 200. A few minutes later in the episode, Al says "I still bowled a 175!"
The characters state at the end of the game that Al needs to knock down 23 pins to win. He rolls two consecutive strikes before flubbing the game on the last (unseen) roll. Strikes in bowling are worth 30, not 10. He technically won the game on his first strike. NOTE: Strikes in bowling are only worth 30 when bowled after a double (2 consecutive strikes). Otherwise, they are only worth 10 by themselves.