World number three Alexander Zverev is happy with his new coach Sergi Bruguera and hopes for “a successful relationship” that lasts “a long time.” ““We tried in Miami and it worked out very well. We get along extremely well on court,” Zverev said at the Madrid Open. “I need a coach. I need guidance. I need somebody who can look out for what is going on on the tennis court. I think Sergi is one of the best guys for this.” Zverev has not had a proper coach in several months, saying his father has had other things to do. He said that two-time French Open champion champ Bruguera was recommended to…