By Neil McLeman Tiger Woods’ biggest test at the Masters will be walking all 72 holes at hilly Augusta National, according to his former coach Butch Harmon. The 15-time Grand Slam champion is set to make his return to competitive action in the first Major of the season next week. Woods, now 48, has not finished a PGA Tour event for nearly 14 months after pulling out of the Masters in the third round last year then withdrawing from the Genesis Invitational in February. The American superstar nearly had his lower right leg amputated following his February 2021 car crash in Los Angeles and has st…