58 yr old, level 3, doubles player. Played for ~2.5 hours, got home, achilles tendon was tight and hurting bad. Did the RICE thing, later soaked heel in Epsom salts and hot water. Still hurting and hard to walk. Put heel pads in shoes and used an Aircast Airheel brace, not much relief. Discomfort went on for 5-6 days. Finally bought some KT tape and attached it to the heel and tendon, up the back of the leg, as per the video. In 3 hours, I was pain free, walking almost normal again. Couldn't believe the tape did this much good. I am a skeptic but it is working. Some things I learned about the tape; you will use up 1/2 the box learning how to apply it. The attachment points should have no stretch for staying on power. Once the tape is on the skin, do not pull it back off as it doesn't stick as well. It is hard to keep the tape together as it wants to split into the Y shape. It is hard to find when it comes off under the bed sheets!