MANSFIELD — Very near the end of Saturday’s performance, John Mayer thanked the Comcast Center audience for following him into what he referred to as “Phase Two” of his career. He defined that as “playing guitar and singing for us,” punctuating that final word with a gesture that encompassed the whole crowd. Mayer was so comfortable with Phase Two, in fact, that he could dump major hits like “Say,” “Daughters,” and the career-launching “Your Body Is a Wonderland” from his set and not worry about his fans revolting.
That’s partly because there’s not just one Mayer but three: the sensitive coffee shop strummer, the bluesy Berklee alum, and the recently minted purveyor of California rock. The latter largely dominated, with peaceful, easy train-track rhythms, country-accented picking, and the airy whine of pedal steel guitar. The backdrop of a rocky desert outcropping just after dusk reinforced the vibe.