The 2013 Major League Baseball season is officially underway and yesterday's Opening Day was one for the record books, literally. We seen the Los Angeles Dodgers' Clayton Kershaw throw a complete-game shout out and hit his 1st career home run in a 4-0 victory over the San Francisco Giants as well as the Washington Nationals' Bryce Harper became the youngest player to ever hit multiple home runs in a single game on Opening day. In addition to seeing some great baseball played on Monday we also seen a handful of great cleats worn by players like the New York Yankees' C.C. Sabathia, the Los Angeles Dodgers' Carl Crawford, and the Philadelphia Phillies' Jimmy Rollins. To see exactly what models of cleats were worn check out The 10 Best Cleats Worn in the MLB on Opening Day 2013.