The striker created the goals that secured Arsenal's place in the last 16 of the Champions League.
In other Champions League matches, Manchester United beat Scottish champions Rangers while Chelsea impressed while beating Lazio.
Inter Milan travel to Lokomotiv Moscow seeking to preserve their 100 per cent record in the Champions League this week.
News of all that's transpired on and off the football field.
Managerless Tottenham Hotspur face a long trip to Ukraine for a meeting with former boss Juande Ramos after being drawn against Dnipro Dnipropetrovsk in the last 32 of the Europa League.
IMAGES from the Europa League matches played on Thursday
Arsenal led a list of nine clubs who grabbed a second win in as many games in the Europa League group phase as France striker Olivier Giroud scored his 100th goal for the club in a 4-2 win at BATE Borisov on Thursday.
Croatia's Football Federation (HNS) sacked Ognjen Vukojevic, a member of the national team's coaching staff, over a "glory to Ukraine" video posted after Croatia beat Russia in the World Cup quarter-finals, HNS said in a statement on Monday.
Portugal, Denmark, Poland, Serbia, Austria, Croatia and Ukraine are among countries which will again be able to enjoy league football, albeit in unusual circumstances with no spectators allowed at games.
Andriy Yarmolenko, whose 22 goals have established him as the player most likely to fill the role a full decade after he was saddled with the tag of the "new Shevchenko".
Images from Thursday's action in the Europa League Europa League - Round of 16 Second Leg - matches.
News of all that's transpired on and off the football field
Visitors Ajax had looked comfortable after former Southampton winger Tadic set up the first goal with a swerving cross before drilling home the second himself.
Striker Sergio Aguero has admitted the Premier League title is slipping out of ManchesterCity's reach and urged his teammates to keep rivals Manchester United at bay in the race for Champions League qualification ahead of Sunday's derby.
Having seen the domestic league and cup double go to Porto last term, Benfica missed a string of chances against PAOK in a one-sided first half as they enjoyed 72% of possession.
Yet Milan's defensive frailty was punished when Konstantinos Fortounis scored from the penalty spot in the 81st minute to give his side the win that left them second in Group F on 10 points.
Holders Barcelona will play Premier League leaders Arsenal in the last 16 of the Champions League, 10 years after the sides faced each other in the final, following Monday's draw for the first knockout stage.
Last year's finalists Juventus will face-off against Bundesliga champs Bayern.
Chelsea are growing in confidence after a poor start to the season and optimistic for Champions League qualification ahead of Tuesday's tie against last-placed Maccabi Tel Aviv in Israel, manager Jose Mourinho said.
Chelsea manager Jose Mourinho has lost an appeal against the suspended one-match stadium ban and 50,000 pounds ($76,115) fine he received last month, the Football Association said on Thursday.
Chelsea manager Jose Mourinho has been given a one-match stadium suspension with immediate effect and fined 40,000 pounds ($61,680.00) over a misconduct charge, the Football Association said on Monday.
Barcelona's Luis Suarez hit a brace and set up a double for a spritely Lionel Messi to score in his first start after injury in a rampant 6-1 Champions League victory over AS Roma on Tuesday.
Valencia have agreed to sign Mali midfielder Seydou Keita on a contract until the end of June with an option for one more season, the La Liga club said on Wednesday.
Manchester United and Tottenham Hotspur built hefty leads with emphatic away wins in their Europa League last 32 first-leg matches but AC Milan were held to a 2-2 draw at Red Star Belgrade as the competition resumed on Thursday.
The Champions League group stages took on a less predictable look after Thursday's draw, helped by UEFA's decision to tweak the seeding system.
Napoli put a foot in the Europa League semi-finals with a perfectly crafted 4-1 win at VfL Wolfsburg on Thursday as Marek Hamsik scored twice in an Italian masterclass to bring cheer to beleaguered coach Rafael Benitez.
Fiorentina tore apart Italian rivals AS Roma to reach the Europa League quarter-finals with a 3-0 win that left their opponents' season in tatters and under-fire coach Rudi Garcia tottering on the brink of the sack.
Chelsea midfielder Cesc Fabregas has denied suggestions of a rift with manager Jose Mourinho, accusing "certain individuals from outside" of trying to destabilise the club and refuting reports that he is leading an alleged dressing-room revolt.
Ajax, semi-finalists last season, came from behind to beat PAOK 3-2 for a 5-4 aggregate win over the Greeks while Red Star knocked out FC Copenhagen on penalties after a bizarre shootout involving 22 spot-kicks.
Azeri champions Qarabag took a big step towards the playoff round with a 2-1 win at Cypriot side APOEL but Dinamo Zagreb left their progress hanging in the balance after the Croats played out a 1-1 home draw against Hungary's Ferencvaros.
Tottenham manager Mauricio Pochettino has said Ajax have an unfair advantage because the whole of the Dutch league programme was postponed to help Erik ten Hag's side prepare.
He also said he expected to be at Chelsea for the remainder of his four-year contract and that Chelsea would finish first or second in their Champions League group.
Pep Guardiola will return to the Nou Camp in the Champions League group stage after his new club Manchester City were drawn against his former Barcelona team on Thursday. The two sides were drawn in Group C alongside Borussia Moenchengladbach and former European champions Celtic in one of the toughest of the eight sections. Spanish coach Guardiola, who won the Champions League twice with Barca, faced the Catalans when he was in charge of Bayern Munich two seasons ago and suffered a 5-3 defeat in the semi-finals.
Arsenal teenager Bukayo Saka scored his first goal for the club as they beat 10-man Eintracht Frankfurt 3-0, while Manchester United's 17-year-old Mason Greenwood secured a 1-0 win over FC Astana as the Europa League group stage began on Thursday.
Argentina striker Sergio Aguero said on Thursday that he will leave ManchesterCity to return home to his first club Independiente after his contract expires following the 2018 World Cup.
Brown Ideye scored twice as West Bromwich Albion progressed to the quarter-finals of the FA Cup.
Jose Mourinho lamented Chelsea's defending from set-pieces but was otherwise satisfied with his team's display after they suffered a fifth defeat of the season on Tuesday, 2-1 at Porto in the Champions League.
Arsenal's young guns continued to shine as they dismantled Standard Liege 4-0 on a hectic night of Europa League action that produced a full house of Spanish victories on Thursday. A summary of the matches.