Fundamentals class in Memphis showed me a very good additional reversal if you are in guard, and your opponent stands up.

Stand up Reversal
  • Before they stand up, make sure that you have both sleeve grips
  • When they stand up, release close guard and put your feet on their hips with strong pressure
  • Switch your sleeve grip so you have a cross sleeve grip
  • use your now free arm to hook the back of the foot
  • Use your opposite leg to hook their need
  • Push with your hip leg while pulling on their knee and heal
  • Tactical standup