PEORIA, Ariz. — The practice round is over. Fernando Tatis Jr. is ready to tee off. “Last year it was more getting back on track, seeing how I was gonna bounce back after all those surgeries, (seeing how) my left arm was feeling during a long season,” Tatis said Wednesday morning. “And it was a battle. … But now this year is totally different (in terms of) preparation and what I’m aiming for.” As for what that aim is, the Padres right fielder is still declining grandiose specifics. He repeated Wednesday something similar to what he said in December during his time playing winter ball in his na…