Tweaked my wrist. I have using 14 oz gloves on the bag and during kick boxing for about 2 years now - mainly because I can pull them off and on faster than MMA gloves when we are doing focus mitt drills. I hit the bag with bare knuckles the other day and my wrist folded. My wrist strength has suffered using the big pillows and I need to correct it. From now on, 14oz or 16oz for sparring only, 4oz MMA gloves for everything else.