Rules say that every team has to have a player selected... but not necessarily participating. So... Walker doesn't HAVE to be picked. The NL is LOADED with SPs, to the extent that even guys like Freddy Peralta (122 K in 87 IP, 2.17 ERA), Walker Buehler (8-1, 2.35), or Joe Musgrove (2.63 ERA AND the no-hitter). Hell, Scherzer (2.10 ERA, just under 13 K/9) and Kershaw (2.8 fWAR, 7th in the majors) are on the outside looking in. What REALLY sucks is Diaz-- having the best overall year of any reliever not named Josh Hader-- losing out to guys like Alex Reyes (1.54 ERA and 20 saves... with at least half of those coming in lucky, white-knuckle fashion, along with 7 BB/9) and Mark Melancon, who's maybe the fourth best reliever on his TEAM.