Remember that many people carry Staph infection without having any symptoms. While 25% to 30% of the population may be colonized with Staph, only about 1% of people have been colonized with MRSA.
According to mlb.com, baseball bat's cannot exceed 42 inches, or 106.68 cm (1 inch = 2.54 cm). From Wikipedia, the average mass of a baseball bat is 0.96 kg. You can check the mass by weighing an average baseball bat, then dividing that number by 9.8 m/s^2. If you need any more help, don't hesitate to ask! According to mlb.com, baseball bat's cannot exceed 42 inches, or 106.68 cm (1 inch = 2.54 cm). From Wikipedia, the average mass of a baseball bat is 0.96 kg.
The average at-bats per player (due to many factors noted below) is just 34.16AB, which means the average MLB player uses just 3-4 bats per season (simple math to calculate for different players if you know their number of ABs) though a top of the order starter with 600 at bats might use closer to 60 bats per season based on this calculation.