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1 Minute Clinics

Tennis Channel aims to bring you the best instruction in the world. With our 1 Minute Clinics, you can learn the modern tips from some of the most cutting edge instructors in the world.


1 Minute Clinic Instructors

Joe Dinoffer
Joe Dinoffer has had an extensive "world class" career in the tennis industry, and has conducted clinics and exhibitions in over 50 countries, personally logging over 30,000 hours of instruction in English, Spanish, and German. He is a Master Professional in both the PTR and USPTA, a distinction awarded to only a handful in the tennis industry.

Joe also received the prestigious 2006 USPTA Tennis Industry Excellence Award. Joe is the author and editor of 7 books and more than 20 DVDs. He writes regularly for Tennis, Smash, Tennis Life, and Racquet Sports Industry Magazines, and also has numerous instructional tips airing on the Tennis Channel. As a member of the Head/Penn Advisory Staff and National Speaker Bureau, Joe is a frequent speaker at national and international tennis conferences, having conducted over 300 workshops since 1995. 

Jimmy Johnson
Jimmy Johnson was consistently a top junior in the Northern Section. After juniors, Jimmy played Division 1 College Tennis and then went on to play the ATP Tour. After making the decision to become a high level tennis coach, he continued to pursue his education at a highly specialized "Tennis Technical Program" at Tyler College in Texas. Today, Jimmy Johnson brings over 17 years of coaching experience to Advantage. For the past 12 years he has coached over 180 national- ranked Juniors, over 70 international- ranked players and over 20 professional tennis players. Jimmy attributes his success as a coach to his ability to push players to a level higher than they thought they could achieve and by understanding and applying principles of good mechanics.

Mahmoud Karim
Mahmoud grew up in Cairo, Egypt where he was a top 3 junior player. Mahmoud came to the U.S. at 15 to attend the Saddle Brook Tennis Academy in Florida. From there he achieved a top ITF Ranking and earned himself a Division 1 Scholarship at both Rice University and then to Loyola Marymount University. Mahmoud played the ATP tour for 2 years until an injury prevented him from going any further. Mahmoud made the decision to dedicate his life to bringing his knowledge and expertise to the tennis world and partnered up with Jimmy Johnson to help build and grow Advantage Tennis Academy in 1995. For 9 years, Mahmoud has coached top national and International- ranked juniors, including some ATP and WTA touring pros. Mahmoud's innate ability to understand what goes on in the minds of players on the court allows him to connect with players and instill mental toughness tactics that are critical to every aspiring athlete. Mahmoud assists the Advantage players on a day-to-day basis on developing their mental focus, physical conditioning, and game winning strategy.

Mitch Bridge
Mitch Bridge started playing tennis at age 6 and was a top player in the Northern Section before moving to Southern California where he played high level junior tennis. Mitch competed at top-ranked Long Beach State from 1984-87 and has won over 100 men's open titles in his playing career. Mitch has coached full-time for over 20 years and has developed hundreds of sectional and national level players. "Tennis is in my blood. I have had a passion for the game since I hit my first ball, and I enjoy passing on that love of the game to junior players." Mitch founded Junction Tennis Academy in 1994-a full-time boarding program in Grand Junction, Colorado. Junction Tennis Academy merged with ATA in January 2008.

Debbie Graham Shaffer
Debbie Graham Shaffer, located in Carson, CA, joined the USTA Player Development staff as a full time National Coach for Women's tennis in January 2003. Prior to joining the USTA Player Development staff, Debbie was a coach at the USTA Competition Training Center at the Newport Beach Tennis Club since 1999. She played on the WTA Tour for 10 years and was ranked as high as No. 28 in singles and No. 9 in doubles, winning five doubles titles. She was undefeated in five matches for the U.S. Fed Cup team in 1992-93. Graham served on the WTA Board of Directors from 1998-2000 and on the USOC Board of Directors from 2000-02.  She won the 1990 NCAA singles title as a junior at Stanford University and was member of three NCAA championship teams (1989-91). Debbie earned all-American honors four consecutive years and was ranked No. 1 in singles and doubles during her collegiate career.

Kimberly Po
Kimberly Po is a former professional tennis player from the United States. During her career, she won the mixed doubles title at Wimbledon in 2000 (partnering Donald Johnson). She was also a women's doubles runner-up at the US Open in 2001 (partnering Nathalie Tauziat), and a mixed doubles runner-up at the US Open in 1999 (partnering Johnson). She won a total of six top-level doubles titles. Her career high world rankings were World No. 6 in doubles (in 2001) and World No. 14 in singles (in 1997). Her best singles performance at a Grand Slam event came at the Australian Open in 1997, when she reached the quarter-finals before being knocked-out by Amanda Coetzer.

David Nainkin
David Nainkin joined the USTA Player Development staff in January, 2004 as a National Coach for Men's tennis. He reports to Rodney Harmon, Director, Men's Tennis. Before joining the USTA, David, was the personal coach of Wayne Ferreira and many other professional and top junior players. He played collegiate tennis for UCLA, where he received a full tennis scholarship and played No. 1 singles in 1991. David played on the ATP tour for several years reaching a career high ranking of 128. In 1998 he made it to the 3rd round of the US Open. David also represented South Africa in Davis Cup Competition in 1998 and 1999.  After playing the circuit for seven years, David returned to UCLA and graduated with a degree in sociology.

Chris Lewis
Chris Lewis is a former professional tennis player from New Zealand who reached the 1983 Wimbledon finals as an unseeded player. A world no. 1 junior player in 1975, the 5'11, 165lbs. Lewis won 3 career singles titles with a career high ranking of World No. 19. His career singles tour record was 242 wins against 204 losses. He also won 8 doubles titles during his 12 years on the tour. In reaching the '83 Wimbledon finals, with a five-set win over Kevin Curren in the semi-finals, Lewis became only the seventh unseeded man to accomplish the feat and only the second New Zealander after Tony Wilding to reach a Wimbledon singles final. He lost the final to John McEnroe, 6-2 6-2 6-2. He reached the finals at the Cincinnati Masters in 1981, falling 6-3, 6-4 to John McEnroe. Now resident in Irvine, California, in addition to owning and operating, an online tennis equipment retailer, he coaches promising young players at the Woodbridge Tennis Club.

Michael Kosta
Michael Competed for three years on the ATP Tour, earning a world ranking if top 900 in singles and top 350 in doubles. Won four ITF doubles titles. He authored "101 Tips for Winning More Tennis Matches" (Coaches Choice Publication), an easy to use instructional book for the competitive player. Endorsements for the book include Todd Martin, Mardy Fish, Amer Delic and many of the game's top coaches. Michael also played four years of college tennis at the University of Illinois where he won four Big Ten Championships on the number one ranked team in the NCAA.


  1. Brad (2/23/2013 7:18:30 PM) 

    Eliot Teltscher does a 1minute clinic on forehands only from both sides of the court. Hey Eliot, if you want to be a complete player you've got to have just as effective backhand and you never, ever run around your backhand to hit forehands. You will lose center court positioning, become off balance and have to cover much more ground getting tired faster. Sometimes the pros hit a great shot, but in MOST cases they put themselves in big trouble. Find a wall or use a ball machine, but develope an equal backhand. And as for running around your backhand ... "Just don't do it!".

  2. Brad Bahret (1/3/2012 9:48:39 AM) 

    That penny on the racket thing is great to hit a FLAT ball, but that isn't going to help your cause hitting topspin which gives you more margin for error over the net reducing errors and we all know it's not about hitting more aces and winners - it's about reducing your errors! Do you realize even at the professional level they are unable to hit more than 3 groundstrokes before making an error or winner, and in most cases an error defining the match. You must have consistency and flat shots won't get you there.

  3. john hershey (9/23/2011 9:24:11 PM) 

    where can I find Kimberly PO's OMC on Groundies Movement drill?..thanks, john

  4. Amenic (8/29/2011 8:05:55 AM) 

    Hey Everyone! .. I heard that in 1 minute clinics you can submit your own video, with a well known coach..of course... And then tennis channel would have it on it's youtube, and if the video is real good, then it's to be shown on TV!..Does anyone know anything about that?

  5. Janpricezim (10/31/2010 11:08:00 PM) 

    Looking for Destination Tennis episode that visited the USTA Training Center and talked about the importance of dynamic stretching. Help!

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