Denver Nuggets president Tim Connelly called Davis after the draft and offered him the opportunity to play for their summer league team. […] “I swear I said to my agent, ‘Is this a joke? This happened fast. This can’t be real,’ ” Davis said. “He said, ‘This is real. This is serious.’ I said, ‘I got to call my mom and my dad.’ I wanted to thank God. I was the only [undrafted free agent] who signed a contract from the whole summer league. A real deal. … “I still didn’t believe it after I signed. But I saw a story in the paper and said, ‘This is definitely real.’ For it to be fully guaranteed in the first year, I just had to continue to thank God. It was an unbelievable feeling. A joyful feeling.”