The state of MLS goalkeeping: What's caused dip in quality, what lies ahead?

Luis Robles, 2015 MLS goalkeeper of the year, was one of the bright spots at the position this season. Ben Solomon/MLS/USA TODAY Sports

The 20th MLS season is now behind us, with the Portland Timbers becoming the first Cascadia team to win MLS Cup. It was a highly entertaining match for a lot of the right reasons and a few of the wrong ones.