Fighter with toughest fight resume

Does anybody have a more impressive ring resume than Donald Cerrone?  He is coming up on his 50th fight vs Conner and I was blown away by the level of competition he has faught since the start of his career.  Of his 50 fights, 47 are against elite level fighters.  

 

Is there anyone more impressive?

This will be his 51st MMA fight but yes he's fought the best all his career. 

 

interestingly, since he fought Nate just over 8 years ago he's had 28 fights. Conor fight will be 29. Nates had 10