Didier Drogba became Chelsea's top scorer in the Champions League with his 19th goal in the competition that sealed a 2-1 win over CFR Cluj on Tuesday and sent last season's beaten finalists through to the last 16. Ivory Coast striker Drogba, who has had a torrid season marred by injuries and suspension, sent Chelsea into the knockout phase for the sixth successive season with a 71st-minute winner. Drogba produced a clinical finish after Yssouf Kone had cancelled out Salomon Kalou's opener. The result also completed a clean sweep for English teams in the group stage as Chelsea, who finished runner-up in Group A, joined holder Manchester United, Arsenal and Liverpool in the knockout stage which starts in February. AS Roma joined Chelsea in the last 16 as the Group A winners after classy second-half goals from Matteo Brighi and Francesco Totti secured a 2-0 home win over Girondins Bordeaux. Brighi scored from close range after a good run and cross by Simone Perrotta and Totti drilled in the second with the outside of his foot from a superb through ball from Jeremy Menez. Greek side Panathinaikos secured the final available berth in the knockout stage after Giorgos Karagounis scored to give them a 1-0 win over Cypriot rivals Anorthosis Famagusta in a tense affair. Karagounis picked up a loose ball after a defensive blunder on the edge of the penalty box and his shot somehow trickled under keeper Zoltan Nagy and over the line. The result also lifted Panathinaikos to the top of Group B above former winner Inter Milan, who faces potentially difficult opposition in the last 16 after a 2-1 defeat at Werder Bremen. “Now we deserve one of the strongest teams,” Inter coach Jose Mourinho told Sky. “Manchester United, the champions, or Barcelona, currently the best in Europe, to really judge our potential in the Champions League.” It was a vital win for Bremen, who leapfrogged Anorthosis to book a consolation berth in the UEFA Cup last 32 available to the eight third-placed teams. Five-time winner Liverpool won Group D after coming from behind to beat PSV Eindhoven 3-1 and finish ahead of Atletico Madrid, who was held to a 0-0 draw at Olympique Marseille. Barcelona, who had already won Group C, was beaten 3-2 at home by Shakhtar Donetsk after fielding an understrength side while also qualified Sporting Lisbon enjoyed a 1-0 success at Swiss side Basel. Thailand, Vietnam in semis Thailand and Vietnam booked places in the semifinals of the Southeast Asian championships after wins in their final Group B games in Phuket on Wednesday. Thailand finished top with three wins from three after thrashing Malaysia 3-0, while Vietnam advanced with a 4-0 win against Laos to breathe life into their stuttering campaign by finishing as runners-up with six points. Thailand will play Group A runner-up Indonesia in next week's semifinals on a home and away basis. Vietnam will meet holder Singapore after second half goals from Nguyen Viet Thang (48), Pham Luong (63) Huynh Thanh (66) and Phan Thanh Binh (81) earned a victory over lowly Laos.