Looking to play this weekend during the day

I am in between a 4.0-4.5.... of course, some days I could play worse. I live in Castro Valley but willing to venture to Hayward, San Leandro, Dublin/Pleasanton or even San Ramon as I am only a few minutes away. I was never rated but played some high school. I am looking for 3.5 to 4.5 players to get out and get some competitive matches going or you can use me as your personal ball machine for rallies. Doubles (need a 4th)?