Lions notes: Matthew Stafford invited several receivers to his home this offseason

• Matthew Stafford kept himself busy this offseason. Not only did he see a quarterback guru in California, but he wanted to get more familiar with his fellow receivers. Stafford invited rookie tight end Michael Roberts to his Atlanta home, along with Jace Billingsley and Eric Ebron, to help work on routes and develop relationships with his receivers.

• I joined “The Sports Bosses” on SB Nation radio on Tuesday to help preview the Lions 2017 season. The interview starts at the 25-minute mark.

• The Detroit Lions are using nifty technology to help cut down on drops. Head coach Jim Caldwell talked about using special glasses that blocks the vision of the person wearing them to help with their concentration.

• Michael Roberts spoke to Uninterrupted about three things he’s bringing to camp this year:

• Cool story from ESPN’s Michael Rothstein about how Lions seventh-round rookie Pat O’Connor is growing out his hair so that he can donate it to cancer patients.

• If you plan on going to the Lions’ Mock Game at Ford Field on Saturday, there has been a small change in time:

Gates are now scheduled to open at 9 a.m. ET, not 9:30. Remember, the event is free and open to the public, but you need to procure tickets ahead of time. You can get tickets here.

• The Lions have had a few national media members at practice over the past three days, including Ian Rapoport, Tom Pelissero and Jason La Canfora. La Canfora had some nice things to say about Detroit after his trip: