I'll name all the Sr./Jr. combos i can think of....
Cal Ripken / Cal Ripken Jr.
Ken Griffey / Ken Griff Jr.
Gary Matthews / Gary Jr.
Sandy Alomar/ Sandy Alomar Jr.
Sandy Alomar/ Roberto
also..
Barry and Bobby Bonds
Moises and Felipe Alou
Bob and Bret Boone
...
There's 8, theres 6 more i can't think of...this is a JMAN special here
Cal Ripken / Cal Ripken Jr.
Ken Griffey / Ken Griff Jr.
Gary Matthews / Gary Jr.
Sandy Alomar/ Sandy Alomar Jr.
Sandy Alomar/ Roberto
also..
Barry and Bobby Bonds
Moises and Felipe Alou
Bob and Bret Boone
...
There's 8, theres 6 more i can't think of...this is a JMAN special here