Jef recently surprised his dad Irwin with an incredible gift. Irwin has been a lifelong Yankees fan and used to collect baseball cards, but his collection was thrown away by a family member many years ago. So when Irwin opened up his present and saw Mickey Mantle's rookie card, he couldn't believe it! The thoughtful surprise was the ultimate gift for such a big Yankees fan.
You can watch the full videos on Jef's Twitter.