I can take no credit for these. we have a handful of talented designers here in the WBH, but your best bet is to go over to the OOTP forums, in the “OOTP 14 Mods” subforum and post a request. I think there’s a sub-sub-forum for logos/jerseys that might work the best.
The guy that did mine (and many in the past) goes by davwms on the OOTP forums. while he does a really good job, I don’t think he takes on many open requests any more (at least that’s what he told me this time). but there area a lot of others that do great work, just be sure to profusely thank them for their time.