Both bowlers feature in the top-five of ICC's T20I rankings for bowlers.
Earlier in June, he was diagnosed with bowel cancer.
McCullum plays with Lynn as his partner in the BBL and Williamson was companion in New Zealand.
Who is the most followed team on social media?
These players have been indispensable parts of their team's batting lineup in ODI cricket.
Devcich is currently representing Toronto Nationals in the Global T20 Canada.
Derbyshire's opening match is against Lancashire on July 6.
The former New Zealand batsman has spoken about the time he failed a drugs test in 2016 with the Gujarat Lions.
All the stats and numbers that were recorded during the carnage in Taunton.
A Kiwi traveller to Kerala was surprised to see his following in the God's own country.