POMONA, N.Y. — Giants linebacker Mark Herzlich knows how Dave Gettleman is feeling.



Herzlich, 30, was diagnosed with Ewing’s sarcoma, a rare form of bone cancer, in 2009 before his senior season at Boston College. Herzlich reached out to the Giants’ general manager to offer support and some tips last week after the team announced the 67-year-old’s diagnosis with lymphoma.



“I know how hard the feeling of first getting diagnosed is because you’re so nervous and scared about what’s going to happen,” Herzlich told The Athletic at the Landon Collins Celebrity Softball Game on Saturday. “I just wanted to let him know that I was here for him if he had any questions, little chemo tips that you learn along the way: Have a Jolly Rancher when you’re getting your IV in and put hot sauce on everything because it blinds the taste – little things like that. It’s a tough ordeal for him and for anyone who gets...