Mike Clevinger already has reclaimed his spot in the rotation. Blake Snell isn’t too far behind. Whatever comes of the discussion after the Padres use all six starting pitchers on the active roster over the next week, Nick Martinez aims to at least make it interesting. At least as much as he can. The 31-year-old right-hander matched a career high with seven innings, supported solely by two homers from Manny Machado in a 2-1 win over the Miami Marlins on Thursday night at Petco Park. It was just the eighth time in his career that Martinez had completed seven innings and the first time he pitche…