Lately, and perhaps a sign of getting older, but my left forearm has been getting really sore and tight after a round. It started to happen last month. I'm not swinging at the ball any harder either. At first, it was my right forearm that felt this way, but then went away after using a compression band.
Now, the same forearm soreness and tightness is on my left forearm. I use a compression band during play which makes it a lot more comfortable, but notice the soreness and stiffness afterwards. It feels a bit better everyday since, but still tight. I'm considering switching to graphite shafts and there are many reputable iron graphite shafts out there..oye.