With the death of Abin Sur, his Green Lantern ring found a replacement in young artist Kyle Rayner. This put him in the crosshairs of Sinestro. However, with Superman's help, Sinestro was defeated. John Stewart eventually sent him to Katma Tui for training.
Kyle was eager to return to Earth to allow John Stewart a leave, but he was turned down by the Guardians. However, the invasion of Amazo of Oa, then Earth, allowed Kyle to set foot on his home planet once again.