2018 Knoxville Challenger – Doubles

Doubles
Doubles
2018 Knoxville Challenger
Champions	Toshihide Matsui; Frederik Nielsen
Runners-up	Hunter Reese; Tennys Sandgren
Score	7–6(8–6), 7–5

Leander Paes and Purav Raja were the defending champions but only Paes chose to defend his title, partnering Miguel Ángel Reyes-Varela. Paes lost in the quarterfinals to Alex Lawson and Jackson Withrow.

Toshihide Matsui and Frederik Nielsen won the title after defeating Hunter Reese and Tennys Sandgren 7–6^(8–6), 7–5 in the final.

Seeds

First round					Quarterfinals					Semifinals					Final

1	L Paes MÁ Reyes-Varela	6	6
	H Hach Verdugo R Roelofse	4	2		1	L Paes MÁ Reyes-Varela	3	4
	A Lawson J Withrow	6	6			A Lawson J Withrow	6	6
WC	JC Aragone B Fratangelo	4	4								A Lawson J Withrow	7	1	[3]
4	M Granollers M Vervoort	4	6⁴								T Matsui F Nielsen	5	6	[10]
	T Matsui F Nielsen	6	7⁷			T Matsui F Nielsen	6	3	[10]
WC	C Eubanks M Krueger	6⁰	4		WC	T Stodder P Touliatos	2	6	[5]
WC	Timo Stodder Preston Touliatos	7⁷	6													T Matsui F Nielsen	7⁸	7
	P Polansky A Shamasdin	6	3	[10]												H Reese T Sandgren	6⁶	5
Q	H Heliövaara H Laaksonen	4	6	[2]		P Polansky A Shamasdin	6⁴	7⁷	[10]
	R Gonzales N Lammons	3	6	[10]		R Gonzales N Lammons	7⁷	6⁴	[8]
3	M Reid J-P Smith	6	3	[5]							P Polansky A Shamasdin	4	2
	H Reese T Sandgren	3	6	[10]							H Reese T Sandgren	6	6
	J Jung S Verbeek	6	3	[8]		H Reese T Sandgren	6	6
	R Galloway N Pasha	6	3	[10]		R Galloway N Pasha	2	4
2	M Arévalo R Maytín	4	6	[3]