Michael Cavic reported to skip European championships to have surgery on lower back; Jason Lezak skips 100 free prelims of TYR Swim Meet of Champions, while Chloe Sutton and Tyler Clary are primed to swim three events in Friday's finals; Canet stop of Mare Nostrum set to feature big matchup in women's 100 breast; Amanda Beard making return to sport in Southwest Classic; Michael Phelps, Scott Spann and Allison Schmitt among top athletes at NBAC meet.