James Anderson has suffered a "mild strain to his right groin" just a month before the Ashes get underway, the England and Wales Cricket Board announced late Sunday. The 40-year-old Anderson, the most successful fast bowler in Test history with 685 wickets, sustained the injury on Thursday's opening day of Lancashire's County Championship match against Somerset at Old Trafford and took no further part in a match that ended in a draw on Sunday. The ECB added Anderson's fitness will be assessed nearer the time of the lone Test Test against Ireland at Lord's starting on June 1.