I don't know which tournmanet you were watching because Sawgrass is probably wider than most courses on the tour. For touring pros I would say the fairways are quite generous. Dye makes them look narrower than they really are. I'd say most are quite generous. 35+ yards wide.
For example, accoridng to google earth, just to name three
9th hole = 58 yards wide
14th = 40 yards wide
18th = 35 yards wide