Craig Biggio Houston Astros Dirty Helmet!

Houston Astros second baseman Craig Biggio returns to the dugout after an at-bat against the Washington Nationals at Osceola County Stadium in Kissimmee, Florida, on March 7, 2007. (UPI Photo/Ed Wolfstein Stock

Have you ever wondered what's up with all that gunk on Pablo Sandoval's helmet?

Houston Astros: Framber Valdez denies using sticky stuff in Game 2

Craig Biggio - Wikipedia

MLB - Craig Biggio Mike Piazza Jeff Bagwell in Hall of Fame limbo - ESPN

Craig Biggio: 7 Highlights for the Hall of Famer

Craig Biggio & Jeff Bagwell Signed Astros Full-Size Batting Helmet Inscribed HOF 15 & HOF 17 (TriStar)

Smallthoughts: Old School Tuesday …Craig Biggio – smallthoughtsinasportsworld

Craig Biggio's road to Cooperstown paved with pine tar and grit

All this talk of foreign substances on hats has got me thinking of this guys iconic helmet : r/Astros

Jeff Bagwell Houston Astros Autographed Replica Batting Helmet

Craig Biggio - Wikipedia

Far and Wide: Milestone mania in the major leagues