Edit: There's 9 rounds, not 10.
1: 5:00
2: 3:00
3: 2:00
4: 1:00
5: 0:45
6: 0:30
7: 0:20
8: 0:15
9: 0:10
I've decided you're wrong because I have the faster time.
So funny but I'll take it.