Invite-type website for sports group

Hello. We are looking for a website design for our tennis group. We like to play competitively and primarily play singles or head-to-head and keep score of matches and overall records. Currently to schedule a match or challenge someone in the group, we must make phone calls and emails, then email the group the score (one of the wives keeps track) and this doesn't work well. We want to know when each other has a match and refer to a web site page where we know who is playing, where it will take place, and their previous record against each other. One guy said it would be similar to the site evite, but perhaps a developer will have a better idea. It doesn't have to look super nice but must make planning and scheduling matches easier than now. also it would be nice to have an announcement email function to say player A has challenged player B. Is such a thing possible to do? If so, please let us know how much it would cost and how long it would take. Oh, and if possible it would be great if it worked with adobe dreammaker web design software so the woman keeping track can [login to view URL]!