PHILADELPHIA — I’ve had a soft spot for Randal Grichuk since I watched him make history at Citizens Bank Park in June 2015. There, on a Saturday evening, beneath the lights, in front of a packed house of 24,256 people who couldn’t afford a Shore house, a 23-year-old rookie became the first player in MLB history to hit a home run off Seth Rosin. Nobody knew it at the time, but Grichuk would also go down as the last MLB player to homer off Rosin, who was sent down to the minors after the game. As Ryne Sandberg said in his postgame news conference, “Now, he belongs to the ages.” Actually, no, San…