Adorable baby twins Suh Un and Suh Joon threw the opening pitch at the Doosan Bears vs. Nexen Heroes baseball game for '2015 KBO League' this past April 23. And now the behind story for this event will be revealed in the upcoming episode of 'Superman Is Back'!

That day, the twins went to practice throwing the baseball with their dad, Lee Hwi Jae. Both Suh Un and Suh Joon followed their dad's actions by picking the ball up and throwing it up high. They were pretty good despite the fact that the baseball was bigger than their own hands!

Lee Hwi Jae said, "I don't know where they'll throw it. They could even throw it at the coach."