For their last road game of the season, in week 16 the Lions traveled west to San Francisco to play the San Francisco 49ers. The Lions took an early lead midway through the first quarter with a 27-yard Jason Hanson field goal. The 49ers tied it up at the end of the first quarter with a 33-yard field goal by Ricky Schmitt. The only score of the 2nd quarter was a 39-yard 49ers field goal just before halftime. In the third quarter came 2 San Francisco TD's. First a 2-yard catch by Vernon Davis, then a 1-yard run by Frank Gore. The Lions kicked another field goal late in the 4th quarter from 38 yards out. The Lions road losing streak now stands at 20.And for the win, the 49ers improved their record to 7-8.With the loss, the Lions dropped their record to 2-13.
Question: How many more strikeouts did Johnson have than walks while with the Expos?
Answer: 18