Marshall had reached the quarter-finals after Jahangir Khan had pulled out of their match at two games all in the previous round. Marshall may have been jaded by the emotional strain of his match against the great Pakistani, for he was sluggish early on, and trailed not only by two games but by 9-3 in the final game. However, Adarraga, who was brought up in Australia, again produced the fine form that had already accounted for Ross Norman, a former world champion, and Simon Parke.
At 10-11 in the final game, Marshall was struck a full-blooded drive on the leg. He collapsed with a loud yell and it took him almost three minutes to recover. 'It's hard to keep your concentration after being hit like that', he said.
He lost the next three points quickly and with it the match. Adarraga today meets Jansher Khan, the top seed, while the other semi-final is between the defending champion, Rodney Martin, and Dittmar, four times a finalist.
Earlier, Chris Walker, a member of the England team, had a gun pointed at him and suffered cuts and bruises in the second nightclub incident here within three days involving professional squash players.