There are a couple of things Alderweireld would have done differently. One is take the professional yellow card foul. The second is to step up and play him offside. There's way too much risk/danger trying to play with the man in that scenario and Toby would have recognised that. Both those decisions come with experience which Toby has and Sanchez doesn't yet.
Toby isnt even on the bench - we decided to just have a RB and no other defenders on the bench and pick a kid CF...that tells you something about his position at the club and/or relationship with Poch