Alexander Rossi says there was 1 very unforeseen consequence to winning the Indy 500 ... a gaggle of women SLIDING into his Instagram DM's ... wanting to hook up!!
TMZ Sports talked to 2016 Indianapolis 500 winner Alexander Rossi -- who's 24 and single -- in L.A. yesterday ... and asked if his lady situation has changed since winning one of the world's biggest races.
The answer ... a resounding YES!!
Check out the clip!
