For those of you who haven't thought about things like prime, even, and odd numbers since 7th grade and were hoping to keep it that way, skip down to the second section below (beginning "In other notes").
Craig Biggio has been hit by a pitch 271 times. 271 is a prime number, and there are 57 other primes less than 271. On average, it has taken Craig Biggio 9.22 games to record the next hit-by-pitch after a prime number plunk, while the plunks following non-prime numbers have come after only 9.14 games. This could easily lead one to believe that having been hit by a pitch a prime number of times has absolutely nothing to do with when you'll get hit by a pitch, and I would be inclined to agree.
On the other hand, the next plunk has come 7.71 games after an odd numbered plunk, but when Biggio has an even numbered total, it takes an average of 10.58 games to find another pitcher to hit him.
In other notes related to tonight's opposing pitcher, the last pitcher to get the win in the final game of a World Series and hit Craig Biggio with a pitch in his career was Dodgers pitcher Orel Hershiser who won the clinching game 5 of the 1988 World Series, and plunked Biggio on April 1, 1998, and two more times on May 7, 2000. The only other pitcher to accomplish both feats is Jose Rijo, winner of game 4 of the 1990 World Series, and plunker of Craig Biggio on August 2, 1992. Derek Lowe could become the first pitcher to get the win in the final game of the World Series and plunk Biggio in the following season.
Their are 5 pitchers who have been charged with a loss in the final game of the World Series and also hit Craig Biggio: Kevin Brown, Al Leiter, Greg Maddux, John Smoltz, and Calvin Schiraldi. Not at all surprisingly, all five of them lost to over paid teams from New York, but that's a topic for a whole other web site.