#3 Trevoh Chalobah
Trevoh Chalobah has been an emerging youngster from the Cobham academy this season. Although he is already 22, it did take a couple of loan moves for Chelsea to be convinced to bump him up into the senior fold.
But thanks to that decision he has been a revelation at the back for Chelsea this season. His pace, strength and tactical nous have been outstanding, as has been his range of passing.
Chalobah never frets about hitting the occasional long ball to find the winger but his strength lies in releasing the ball quickly to find short passes. The centre-back often plays on the right side of a three-man defense. He is often quick to find a wing-back or a central defensive midfielder.
If he is ever put under pressure, he maneuvers his way out of it before accurately finding his man. All in all, he has attempted 673 passes this term, with a completion rate of 90.2%.
Few Cobahm academy defenders have managed to maintain a spot in the first-team squad but Chalobah might be the first to do so in a long time.
#2 Andreas Christensen
Andreas Christensen may not be a Chelsea player next season but remains one of the biggest defensive weapons in their arsenal. The Dane has been playing with the first-team for nearly five years now and has become a crucial player under Tuchel.
There are few players at Chelsea who can play in the central role of a three-man defense but Christensen performs a brilliant job in it. Although Thiago Silva often occupies that position, the 25-year-old ace is a great deputy across the backline.
His style of playing is a little different as he rarely attempts aerial passes and prefers to keep the ball on the ground. His long range passing is exquisite, while he keeps his short passes crisp and concise. In doing so, he has managed a 90.6% pass completion rate out of the 790 passes he has attempted this term.
Tuchel will be hoping the Blues can renew Christensen's contract as his unique skillset is a huge advantage for the team.
#1 Thiago Silva
Thiago Silva has been the best defender at Stamford Bridge since he arrived 18 months ago. The Brazilian international was brilliant under former manager Frank Lampard and turned into a leader for the Blues under Tuchel.
A calming presence on the ball, Silva has been defensively resolute and a threat to the opposition from set-pieces this season. He takes care of any and all danger in the defensive half, but is also a pivotal figure in the build-up to play.
Long range passing comes naturally to the former Paris Saint-Germain captain and his delivery complements his intentions. The pace and weight of his delivery often helps the wing-backs take the ball in their stride, an avenue through which the Blues create most of their goals.
The 37-year-old has attempted 1441 passes this term, with a completion rate of 92.3%, making him the best passer of the ball at the club.
Silva recently signed a new contract with the club. The Stamford Bridge faithful will be pleased to see him pull off many more wondrous passes over the next year and a half.