Hey everyone I just wanted to introduce myself. I just joined my first 3.0/3.5 mens doubles league that started last week. Neither of us have ever played doubles and lost 6-0 6-0 last monday but had a FANTASTIC time. As far as i'm concerned we can only improve from here haha. My Achilles heel is my serve, any tips on improving consistency on my serve with out causing personal pain in my shoulder?