Hi,
Can someone help me with my limerick poem. I need help because the 3rd and 4th lines must rhyme but i have no idea.

There once was a young tennis player
Who wasn’t worried about winning against Roger
Despite the “ahss” and the “ohsss” made by the crowd
He succeeded in getting Federer ....
Therefore muting all off the naysayer

* it can be something else for the 3rd and 4th lines