Trending in: Cunningham-South, Doris
Trending out: N/A
Cunningham-South has taken his chance for England this month, proving an excellent asset for Borthwick by adding size and power to their pack. With only nine Test caps, he is the kind of bolter that makes a Lions squad. His performances for England haven't gone unnoticed among his teammates, either.
"Seeing him really step up was impressive," England No. 8 Tom Curry said after the New Zealand game. "The stuff you saw, the physicality and the big hits, they are kind of the end process.
"But the whole week, Steve Borthwick was brilliant with him in terms of his lineout role, technique-wise and getting him up to speed knowledge-wise."
More strong performances and he could find himself weating a Lions jersey next summer.
A more obvious name on the teamsheet is Doris. The Ireland captain could be handed the Lions armband too, with Farrell among his biggest fans.
Potentials: Jamison Gibson-Park (Ireland), Alex Mitchell (England) Ben White (Scotland), Tomos Williams (Wales).
Trending in: Gibson-Park.
Trending out: Williams.
Farrell will be wanting a scrum-half to really step up over the next five months, with Gibson-Park likely in the box seat. Mitchell has been Borthwick's first choice since last year's World Cup, and has proved himself at the top level, but he has not played a part this month amid a neck injury.
Meanwhile, White's partnership with Russell should not be overlooked. Williams has been blighted by injury -- he missed the Test against Australia with a shoulder issue -- but has been a key performer for Gloucester this season. He could be in an uphill battle to win Farrell's favour in time for the summer tour.