As scheduled, third baseman David Freese is expected to join the Cardinals in St. Louis for today’s opener at Busch Stadium and will be activated for this afternoon’s game against the Reds. Freese completed his rehab assignment Sunday with Class AAA Memphis. He played nine innings in the field, went three for five with two RBIs, and afterward confirmed that he was ready for a big-league game. Freese opened the season on the disabled list with a lower back injury that took him out of games three times during spring training. KELLY IS OK Cardinals reliever Joe Kelly took a hit off his pitching hand in the ninth inning as he tried to finish the Cardinals’ win. Kelly was checked on the mound and was able to complete the inning. After the game he said the hand had some slight tenderness but he didn’t require an X-ray and said he would be available to pitch if needed today. EXTRA BASES Giants leadoff hitter Angel Pagan had two extra-base hits in his first two at-bats against Cardinals starter Adam Wainwright on Sunday, so Wainwright did more than shift his approach — he shifted his body. Wainwright threw from the right side of the pitching rubber to Pagan in their third meeting and got Pagan to hit into a groundout. … In his Class AAA debut, prospect Michael Wacha, the Cardinals’ first-round pick last June, allowed two runs on five hits and four walks Sunday at Memphis.