Their captain Sinclair went into this game aiming to make some personal history. The 40-year-old forward was making her 324th international appearance and has scored 190 goals for her country.
She is one of three players to score at five Fifa World Cups - alongside Marta and Cristiano Ronaldo - and seemed destined to make history when she was fouled inside the area by Francisca Ordega early in the second half.
Referee Lina Lehtovaara awarded the penalty after the video assistant referee intervened, but Sinclair's effort was weak and well saved by impressive Nigerian keeper Nnadozie.
'Chiamaka's save really lit the fire'
"I'm probably going to embarrass her, but I think she's one of the best young goalkeepers in the world," said Nigeria coach Randy Waldrum.
"I think Chiamaka's save really lit the fire and made us realise there's still something to play for."
Nigeria, ranked 33 places lower than Canada in the Fifa rankings, defended deep and prevented Canada from many clear chances other than the penalty.
Sinclair fired narrowly wide from the edge of the area in the first half, while Nnadozie kept out Evelyne Viens' stabbed effort in the second.
"We've got to move on very quickly - you can get lost and be really down on that," said Canada coach Beverly Priestman.
"Of course the team and I are devastated. We didn't get three points. But at the end of the day we got one and we took two from another team."
Nigeria came closest to a goal in the first half when a mistake from Canadian keeper Kailen Sheridan allowed forward Asisat Oshoala to round her, but the Barcelona forward's shot from a tight angle was well blocked by Ashley Lawrence.
VAR again intervened in the final seconds to instruct Lehtovaara to send off Abiodun for a high tackle on Lawrence, after the Finnish official originally only gave a yellow card.
However Nigeria held on to give them fresh hope of getting out of their Women's World Cup group for only the third time in nine tournaments.
Line-ups
Nigeria
Formation4-2-3-1
16Nnadozie
22Alozie3Ohale14Demehin2Plumptre
10Ucheibe13Abiodun
17Ordega7Payne6Onumonu
8Oshoala
16Nnadozie
22Alozie
3Ohale
14DemehinBooked at 54mins
2Plumptre
10Ucheibe
13AbiodunBooked at 90mins
17OrdegaSubstituted forKanuat73'minutes
7Payne
6OnumonuSubstituted forOkoronkwoat85'minutes
8OshoalaSubstituted forEcheginiat90+1'minutes
Substitutes
1Oluehi
4Ogbonna
5Ebi
11Monday
12Kanu
19Echegini
20Imuran
21Okoronkwo
23Balogun
Canada
Formation4-2-3-1
1Sheridan
8Riviere3Buchanan14Gilles10Lawrence
5Quinn7Grosso
6Rose12Sinclair19Leon
9Huitema
1Sheridan
8RiviereSubstituted forChapmanat71'minutes
3Buchanan
14Gilles
10LawrenceBooked at 74mins
5Quinn
7GrossoSubstituted forPrinceat82'minutes
6RoseSubstituted forLacasseat45'minutes
12SinclairSubstituted forSchmidtat71'minutes
19LeonSubstituted forViensat64'minutesBooked at 90mins
9Huitema
Substitutes
2Chapman
4Zadorsky
11Viens
13Schmidt
15Prince
16Carle
17Fleming
18D'Angelo
20Lacasse
21Awujo
22Proulx
23Smith
Referee:
Lina Lehtovaara
Attendance:
21,410
Match Stats
Live Text
Match ends, Nigeria 0, Canada 0.
Second Half ends, Nigeria 0, Canada 0.
Évelyne Viens (Canada) is shown the yellow card for a bad foul.
Foul by Évelyne Viens (Canada).
Osinachi Ohale (Nigeria) wins a free kick in the defensive half.
Attempt blocked. Jordyn Huitema (Canada) right footed shot from the right side of the box is blocked.
Deborah Abiodun (Nigeria) is shown the red card for violent conduct.
VAR Decision: Card upgraded Deborah Abiodun (Nigeria).
Corner, Canada. Conceded by Christy Ucheibe.
Corner, Canada. Conceded by Chiamaka Nnadozie.
Attempt saved. Sophie Schmidt (Canada) left footed shot from a difficult angle and long range on the left is saved in the bottom left corner. Assisted by Allysha Chapman.
Delay over. They are ready to continue.
Delay in match because of an injury Osinachi Ohale (Nigeria).
Substitution, Nigeria. Onyi Echegini replaces Asisat Oshoala.
Attempt missed. Jordyn Huitema (Canada) header from the centre of the box is close, but misses to the right. Assisted by Quinn with a cross.
Offside, Canada. Quinn tries a through ball, but Nichelle Prince is caught offside.
Cloé Lacasse (Canada) wins a free kick in the defensive half.
Foul by Deborah Abiodun (Nigeria).
Attempt missed. Jordyn Huitema (Canada) header from the centre of the box misses to the left. Assisted by Sophie Schmidt with a cross following a corner.
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