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Semi-final action from the Embassy World Championship (best of 33 frames; prefix denotes seeding):

(6) Matthew Stevens (Wal) 16-17 (7) Peter Ebdon (Eng)
123-12 (84) 7-80 71-33 73-23 (73) 62-71 3-108 (81) 63-65 (Stevens 63) 46-79 (79) 24-98 (97) 6-127 (127) 114-15 (75) 1-68 (59) 95-4 (65) 94-0 (94) 97-30 (97) 73-75 (Stevens 73) 77-38 (Ebdon 30) 77-9 (68) 81-34 (67) 1-75 (66) 30-74 (30, 52) 107-0 (79) 74-28 (54) 9-68 (60) 75-34 (70) 52-62 (Stevens 51) 60-18 (60) 69-42 22-64 80-4 (76) 61-62 (Stevens 56) 0-138 42-78 (55)

Frame 33: A 55 break from Ebdon looks to have accounted for Stevens but the Welshman fights back before Ebdon completes a remarkable comeback.

Frame 32: Ebdon suddenly finds the form which had deserted him earlier in the evening and a brilliantly constructed 138 break means the semi-final will be decided in the final frame, with the Englishman now in the ascendancy.

Frame 31: Ebdon shows immense bravery as he takes on and pots a difficult pink when a miss would have left him staring semi-final defeat in the face. Stevens is 33 ahead with 35 left on the table when a mistake gives Ebdon the lifeline which the seventh seed grasps with glea.

Frame 30: A fluent break of 76 from a confident Stevens leaves Ebdon needing to win the final three frames if he is to reach the final.

Frame 29: In another tense frame, Stevens misses a pink just as he looks likely to edge to within one of the final, and Ebdon pounces on his opponent's mistake to stay in the hunt.

Frame 28: Stevens finally ekes out a two-frame lead despite some tense moments.

Frame 27: Stevens reclaims the initiative as another confident break, this time of 60, puts him back in the lead.

Frame 26: Stevens looks to pull away as he knocks in a 51 break but it is not enough as Ebdon levels the match again.

Frame 25: Stevens takes first blood in the fourth session as a break of 70 clinches the frame and the lead in the semi-final.

(1) Ronnie O'Sullivan (Eng) 13-17 (5) Stephen Hendry (Sco)
51-65 82-45 (82) 24-93 23-66 7-59 46-92 (58) 115-7 (115), 33-67 65-13 63-72 (63, 65) 97-25 8-116 (73) 83-0 (63) 99-0 (99) 0-125 (125) 78-32 29-64 (59) 0-122 (122) 26-81 (81) 6-62 (44) 65-62 (55, 40) 0-124 (124) 1-113 (113), 136-0 (87), 28-67, 92-0, 129-0 (129), 0-101 (100)

Frame 30: O'Sullivan knocks in a confident 51, but Hendry ends any thought of a dramatic comeback with a magnificent clearance to claim a place in the final.

Frame 29: Hendry looks to be on his way to the final before missing a red to the middle when on 45, and a far more relaxed O'Sullivan clears up with 82 to keep the match alive.

Frame 28: Hendry moves to within a frame of a place in the final with a break of 46. O'Sullivan has another chance to hit back but can manage only 23 before losing position, and Hendry clears the table.

Frame 27: O'Sullivan again falters after getting into the balls first and shows the first signs of frustration with a reckless attempt at a red as two breaks of 29 prove enough for Hendry.

Frame 26: Hendry capitalises on an early O'Sullivan error with a break of 46, and despite an excellent long red the Englishman cannot fight his way back into the frame.

Frame 25: O'Sullivan opens with a break of 38 but slips out of position and misses a red to the middle. Henry hits back with a 58 before winning a brief safety exchange with a long red to wrap up the frame.