West Bromwich Albion - Claudio Yacob

The Argentina international has been a consistent performer in the Baggies' midfield for more than 5 seasons. He is just 4 short of 150 appearances in his solid spell at the Hawthorns.
Yacob has scored only one league goal, but his total of nearly 500 tackles in a five-year span is what defines him. He does all the dirty work in the midfield and brings solidity to the West Brom unit. The Argentine is certainly not the kind of person you want to mess with.
West Ham United - Aaron Cresswell

In the age of flying full-backs, the likes of Marcos Alonso and Kyle Walker are deservedly regarded. However, the Hammers possess a gem of a left-back as well. Aaron Cresswell has shown over the last four years that he is capable of competing with the top tier fullbacks, but his contributions have gone unnoticed.
His crossing is exceptional, and he leads in crosses for defenders this season despite being deployed at centre-back many times. Owing to this attribute he has chipped in with 4 assists as well. The England international is also a diligent defender, capable of keeping the opposing winger quiet.