Re: Maria and Thomas go seperate ways
Maybe Thomas just really loves reclamation projects. Maria's game was pretty down in the dumps when he started with her and he managed to help make her a consistent top 3 player and propelled her to that 4th slam.
And now with Caroline's career in a tailspin for the past year and a half, he sees another opportunity to challenge himself. It's possible he was bored with Maria or they were bored with each other and they felt no progress was being made anymore.