Former world No. 1 Andy Roddick acknowledged that Carlos Alcaraz is mega-talented but suggested tennis fans should relax a bit with the Alcaraz and Rafael Nadal comparison. Alcaraz, 18, has been absolutely phenomenal at the start of the new season and some believe he could be follow in Nadal’s footsteps and win a Grand Slam as a teenager. “I can’t mention anything about [Carlos] Alcaraz on Twitter without someone automatically saying, ‘Well, Rafa did this’ and ‘You know, Rafa did that.’ We have to let this guy be his own person. And he seems comfortable in his own skin.He seems comfortable with the way he plays. I just don’t think it’s going to faze …