From the beginning I didn't think it was a Woods, but I can't see anyone else and small characteristics keep taking me back to Tiger.
1. The beginning of the signature have the loop
2. Dot of the i is in correct place in beginning of signature
3. Hard to tell from pic, but 2 loops for W and W loops around (only golfer I have seen doing that in research)
4. Has what looks to be the D then run off like most (cleaner) looking Tiger signatures.
So many golf pro signatures to look at...