The most common injuries as an athlete are sprains and strains, both of which take time to heal.
Connective tissue is made up of primarily collagen; it is tissue that connects, supports, binds or separates other tissues/organs.
So that being said, consuming the right foods can help prevent injuries and create stronger connective tissue.
Look for food that is high in Collagen, Amino Acids, Vitamin C, Zinc, Copper and Vitamin E.