cameron cox caught up with mike >> to us, he's just berko. in the nfl -- >> who's berko? is that his name? i knew that. i was kidding. >> tough love in this name. former sun is living his dream. >> to be here, extremely blessed. chargers organization picking me up. it's about surviving every day. >> how does undrafted qb at this level? >> can you learn in the classroom and put it on the field immediately. if you can't, they'll have another guy to replace you on the spot. i'm showing it's working, chains are moving. >> he's at the bottom of the depth chart trying to make the roster. he isn't your typical backup rookie qb. during the summer, he trained with cardinals backup quarterback drew stanton. back up 101. >> he said be the best friend to starting quarterback. i've been doing that thus far. >> he's working hard for the transition through the nfl. he's made good progress. . >> berko might disown the charger blue, but he hasn't forgot true colors. >> i love you guys, miss you guys. i wear my asu gear everyday when i can. see you soon. >> you'll see him on the field late

>> who is berko? >> is that his name? [ laughter ] i knew that. i was just kidding. >> reporter: yeah, tough love in this league. but he is still living his dream. >> i'm extremely blessed. the chargers organization picked me up. i'm still here. it is about surviving every single day. >> reporter: how does an undrafted qb survive at this level? >> can you take what you learn in the classroom, put it on the if you can't, they have another guy up next. i have shown them in between these areas, there is something that is working. the chains are move in there. >> reporter: he is at the bottom of the chargers depth chart. he is just trying to make the roster but he is not your typical backup rookie qb. he trained with drew stanton. >> that was my first steppingstone to the nfl. he said be the best friend to the starting quarterback. far. i built a great relationship with phil. >> he is working hard. great transition to the nfl. he made great progress. >> reporter: he might don the charger blue. but he has not forgotten his true color. >> i love you guy