#3 Kofi Kingston:
Kofi Kingston, is without a doubt, one of the hardest working members on the active roster. He has been putting quality matches, non-stop for the last 11 years. His tenure has been filled with record-breaking Championship reigns. He has 4 Intercontinental, 3 United States and 8 Tag Team Championship reigns under his belt. Mr. 24/7 only needs to win a World Championship before he can be referred to as a "Grand Slam Champion".
Wrestlemania 35 seems the perfect opportunity for Kofi to achieve this feat. He is currently involved in a story-line where he is fighting against all odds to get his WWE Championship match at Wrestlemania. He is expected to challenge Bryan for the strap. If he ends up dethroning Bryan at the Show of Shows, not only will he become a Grand Slam Champion, but also the first-ever Black WWE Champion.
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In addition to that, a lot of interesting story-line options (involving The New Day) will also be available from there on. Hard work eventually pays off and it's about time, Kofi gets what is rightfully his.