Sebastian Larsson's late leveller denied Alan Irvine three points on his West Brom debut as Sunderland snatched a 2-2 draw on Saturday.
A brace from Saido Berahino cancelled out Lee Cattermole's thunderbolt opener for Sunderland and appeared to have handed Irvine a dream start as the new Premier League season got under way.
However, Larsson swept home a low strike in the 85th minute to ensure Gus Poyet's men left The Hawthorns with a point.
Irvine was a surprise choice to replace Pepe Mel as head coach in June and Cattermole ensured a nervy start to the 56-year-old's West Brom bow with a rasping long-range drive after just five minutes.
But West Brom were level shortly before the break when the hosts were awarded a debateable penalty before Berahino kept his cool from 12 yards.
Steven Fletcher had a goal ruled out for offside after the break and Sunderland were further frustrated when Berahino finished from close range in the 74th minute.
However, Larsson had the last say with a composed finish after good work from Patrick van Aanholt.
Cattermole, who had previously netted just once for Sunderland, opened the scoring with an unstoppable strike in the fifth minute.
The 26-year-old collected the ball 25 yards from goal after a Sunderland set-piece and lashed his strike into the top right-hand corner, Ben Foster unable to keep it out despite getting his hands on the ball.
Despite the setback, the home side enjoyed plenty of possession, but failed to create clear-cut chances.
Sunderland should have punished West Brom for their lack of attacking prowess on the half-hour mark when the unmarked Valentin Roberge headed Larsson's teasing free-kick wide.
Chris Brunt responded for West Brom with a fizzing strike from distance that went narrowly wide, before new signing Craig Gardner - making his debut against his former club - forced Vito Mannone to tip over the bar with a dipping shot.
West Brom's pressure paid dividends three minutes before the break.
Referee Neil Swarbrick perhaps harshly adjudged that Roberge had tugged down Victor Anichebe in the area and Berahino rolled the resulting spot-kick in the bottom left-hand corner, sending Mannone the wrong way.
West Brom thought they had gone ahead shortly after the restart when Craig Dawson's header appeared to cross the line, despite Fletcher's clearance, but the referee had blown for a foul in the area.
Sunderland were also denied by the officials when Cattermole's cross was flicked by Wes Brown into Fletcher, who headed home at the back post, only to be thwarted by an offside flag.
Berahino then put West Brom ahead.
Graham Dorrans' strike was well saved by Mannone, but Gardner collected the ball on the left of the box and lofted a wonderful cross that Berahino side-footed home at the back post.
Sunderland, however, struck five minutes from time to secure a share of the spoils.
Debutant Van Aanholt found space on the left and picked out Larsson, who applied the low finish from eight yards.
|18||S. Berahino||42' 74'|
|Coach: A. Irvine|
for C. Brunt 77'
for C. Gardner 84'
for G. Dorrans 84'
|Henderson eyes long-term Liverpool future|
|I have nothing to prove - Bale|
|South Korea v New Zealand: All Whites looking to future|
|Japan v Uzbekistan: Hosts eye another win under Halilhodzic|
|MLS Review: Kaka nets in Orlando draw|
|Mexico 1 Ecuador 0: Hernandez, Corona help Herrera´s men to victory|
|Deschamps calls for France response|
|Dunga unfazed by pressure|
|Montenegro fan turns himself in after flare incident|
|Injured Messi not ready - Martino|
|Hodgson: Rooney not close to Charlton|
|Terim proud of Turkey|
|Hiddink happy with point|
|Euro 2016 Qualifying Review: Netherlands and Italy stage late escapes|
|Debutant Eder delighted with Azzurri bow|
|Argentina 2 El Salvador 0: Mancuello nets debut goal in straightforward win|
|Kovac not satisfied despite Croatia victory|
|Netherlands 1 Turkey 1: Huntelaar spares Hiddink from historic home loss|
|Ghana 1 Senegal 2: Konate brace downs Black Stars|
|Bulgaria 2 Italy 2: Controversial debutant Eder rescues Conte´s men|
|Morocco 0 Uruguay 1: Cavani spot-kick seals win|
|Al Sadd say talks with Xavi ongoing|
|McClean slams Sunderland´s handling of poppy controversy|
|Ghana 1-2 Senegal: Black Stars continue Afcon hangover|
|Cheltenham player diagnosed with cancer|
|Palace takeover talk premature - Parish|
|Odegaard becomes Euro qualifiers´ youngest starter|
|Job not done yet, Bale warns Wales|
|Israel 0 Wales 3: Brilliant Bale bags brace as Wales go top|
|Dunga backs Neymar to overhaul Pele´s Brazil goal record|
|League Two Review: Hartlepool climb out of drop zone, Cheltenham go bottom|
|El Salvador 0-2 Argentina: Martino's men triumph without Messi|
|League One Review: Canavan leaves it late to deny County|
|Freddy Adu signs with 11th team in as many years|
|Besiktas deny Cech, Danny rumours|
|Puerto Rico v Canada: Haber targets more momentum|
|Miranda not contemplating Atletico exit|
|Austin relaxed over England prospects|
|Manchester United should sign Ibrahimovic - Schmeichel|
|Ibe eyes Liverpool run-in|
|Bertrand called up by England as withdrawal of four players confirmed|
|A-League Review: Risdon nets stunner, Germano tames Roar|
|Panama v Costa Rica: Unbeaten run a secondary concern for Wanchope|
|Italy coach Conte shaken after death threats - FIGC chief|
|Barca fears over Alba eased|
|Schweinsteiger to start Germany qualifier|
|Akinfeev thanks fans after flare incident|
|Injuries offer Kane chance of first England start|
|Russian Football Union to protest following Montenegro abandonment|
|October comeback the target for injured Foster|
|Van der Vaart looks set to leave Hamburg|
|Bale focused on Wales - Coleman|
|Kluivert helps Curacao to victory|
|Hamstrung Alba returns to Barcelona|
|Macedonia v Australia: Confident visitors eye victory|
|Akinfeev to return to Moscow with Russia squad|
|Brnovic: Montenegro have no chance of qualifying|
|Russia had to resume after Akinfeev incident - Capello|
|Terim: Robben absence important|
|Brazil - Chile Preview: Winning is 'our only option' - Dunga|
|France - Denmark Preview: Olsen hits out at 'disrespectful' hosts|
|Morata keen to keep working|
|Canada 1 Guatemala 0: Haber heads Floro´s men to win|
|Difficult to find a place for Kane in starting XI - Hodgson|
|Difficult to find a place for Kane in starting XI - Hodgson|
|Montenegro-Russia abandoned after scuffle|
|Euro 2016 Qualifying Review: Montenegro-Russia abandoned, Spain and England win|
|Accrington Stanley 0 Newport County 2: Visitors up to sixth|
|Kane delighted with ´dream´ start|
|England 4 Lithuania 0: Kane enjoys dream debut|
|Spain 1 Ukraine 0: Morata settles tight contest|
|Akinfeev struck by flare as Montenegro-Russia game suspended after 30 seconds|
|Brazil v Chile: Winning is ´our only option´ - Dunga|
|Northern Ireland v Finland: Controversial fixture met with religious protests|
|Scotland v Gibraltar: Wilson out to dent countrymen´s hopes|
|Republic of Ireland v Poland: Pressure is on, says O´Neill|
|Georgia v Germany: Schneider warns world champions|
|PSV agree permament Guardado deal|
|France v Denmark: Olsen hits out at training facilities|
|Pienaar to return to Everton training|
|Hughes eyes silverware at Stoke after signing new deal|
|Portugal v Serbia: Carvalho vows to attack|
|Dynamo Kiev stadium partially closed after racism probe|
|Hull City fined £30,000 for misconduct|
|Balotelli must work hard for Italy return – Bonucci|
|Marchisio suffers knee ligament injury|
|Hughes agrees new Stoke City deal until 2018|
|Martinez hopeful over injured Everton trio|
|South Korea 1-1 Uzbekistan: Kuziboyev's debut strike denies hosts|
|South Korea 1 Uzbekistan 1: Kuziboyev´s debut strike denies hosts|
|Japan 2 Tunisia 0: Kagawa and Honda shine as Halilhodzic starts with a win|
|South Africa v Nigeria: Mashaba wary of bitter opponents|
|Japan 2-0 Tunisia: Kagawa & Honda shine in Halilhodzic's first game|
|Parma captain Lucarelli welcomes FIGC reforms|
|South Africa - Nigeria Preview: Mashaba wary of bitter opponents|
|Di Francesco ignoring Milan rumours|
|Melbourne Victory 2 Central Coast Mariners 1: Finkler leads fightback|
|Bale would be ´perfect´ for United - Scholes|
|Badstuber and Bellarabi out of Georgia clash|
|Rooney KOs boxing celebration|
|Allen thrilled with Welsh ´hunger´|
|Kovacic to miss Euro 2016 qualifier|
|Costa Rica 0 Paraguay 0: Dour draw marks Diaz debut|
|Reid ruled out of South Korea friendly|
|Deschamps talks up France despite defeat|
|Rooney chasing England goalscoring record|
|Brazil ´superior´ admit French veterans|
|Reeves sidelined for Finland clash|
|Confidence critical for rampaging Brazil - Dunga|