1. Holm beat Rousey who had succesfully defended her title 5 (really 7) times and totally dominated the fight.
2. Holm eked out a split decision against Pennington who had lost to the likes of Leslie Smith and Andrade.
3. Then Holm loses to Tate and Shevchenko.
4. Holm started MMA in 2011 but really picked up steam in 2013 just after the UFC accepted women and it became clear that there would be much more money in MMA than in boxing.
5. Holm trained for 2 1/2 years specifically to fight Rousey. She had a "Ronda Rousey" clause in her contract.
6. To fight Rousey, Holm had to - 1. avoid clinch takedowns, 2. avoid armbars, and 3. maintain distance and make Rousey pay a heavy price for trying to close distance.
7. She did not train to 1. defend shoot takedowns, 2. pursue aggressive striking, 3. fight southpaws, or 4. fight against Muay Thai pros.
8. Against Tate and Shevchenko she had about 2 months to prepare as compared to 2 1/2 years to prepare for Rousey.
9. It didn't help that her team was probably distracted by the Jon Jones mess just before the fight.