Chelsea manager Thomas Tuchel paid tribute to the professionalism of Olivier Giroud on Tuesday after the veteran French forward's overhead kick gave his side a 1-0 win over Atletico Madrid in the Champions League. The 34-year-old's acrobatic effort in the 68th minute in Bucharest handed Chelsea the advantage going into the second leg of their last-16 tie at Stamford Bridge on March 17. Tuchel said Giroud, who has scored 11 goals for Chelsea in all competitions this season, was a joy to work with on the training field. "He trains like a 20-year-old," Tuchel added. "He is a guy who has a good mixture of serious and joy in training. "He is always positive and it is a big factor for the group. "He enjoys every day being a professional soccer player on this level and this is the level he needs to be." (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)