Athlete starts from the net, jogging backwards towards the ad-court doubles corner (1), where he/she performs side-steps towards the deuce-court doubles corner (2), while facing the net Once athlete reaches deuce-court doubles corner, he/she start jogging forward along the side-line until reaching the ad-court doubles corner on the other side of the court (3) Then the athlete performs side-steps towards the deuce-court (4) while facing the back-fence Once athlete reaches deuce-court doubles corner, he/she jogs backwards again along the side-line until reaching the ad-court doubles corner again (1). Athlete can incorporate other movement patterns (e.g. carioca-shuffle) for/during each lap Targeted Musculature Hips Gluteus Adductors Abductors Hamstrings Quadriceps RECOMMENDED LINKS Read about the benefits of a proper warm up routine http://www.fit-2-hit.com - Blog on Athletic Conditioning & Health   http://www.conditioning-coach.com  - Tennis & Conditioning Coach