Team India have a little catching up to do in the fourth Test at the Gabba, as the first day ends with Australia in the driver's seat.The visitors' inexperienced bowling attack managed to pick up five wickets on the day. The Aussies scored 274 runs, thanks to a brilliant hundred from Marnus Labuschagne and an unbeaten 61-run stand between Cameron Green and skipper Tim Paine.India debutants T Natarajan and Washington Sundar were among the wickets, bagging three scalps between them.There were mixed reactions from India fans on Twitter after the first day. Here are few of their opinions on the key events from the day.Fans hail T Natarajan after an impressive first day in Test cricketLabuschagne had added 113 crucial runs with Matthew Wade for the fourth wicket. At 200-3, Australia looked in complete control of the game.Just as they were trying to up the ante, left-arm pacer T Natarajan struck twice in two overs, removing both well-settled batsmen with short-pitched balls.Labuschagne gone. Natarajan strikes again - Australia 5-213.Live #AUSvIND: https://t.co/IzttOVtrUu pic.twitter.com/qpe4fXPUk3— cricket.com.au (@cricketcomau) January 15, 2021The dream start to Natarajan's international career continued as he brought India right back into the game. Here is what twitterati had to say about the 29-year-old's performance:What an incredible tour for @Natarajan_91 🙌🏻First ODI than t20 and now Test!!He is shinning ✨✨#nattu#INDvAUS #AUSvIND #TeamIndia 🇮🇳 https://t.co/m5WBl1hOD7— Amandeep Kaur (@amankaur2625) January 15, 2021#Natarajan - Came to the tour as Net BowlerMade his ODI Debut & Picked 2 Wickets ✅Made his T20I Debut & Picked 2 Wickets ✅Made his TEST Debut & Picked 2 Wickets ✅What a Story to tell the Future Generations 🤩❤️#AUSvIND pic.twitter.com/0UxzjMjTLo— Thyview (@Thyview) January 15, 2021What an incredible journeyBecame a household name, in the space of just 3-4 monthsStuff of movies and fictionHats off to @Natarajan_91 #Nattu #Natarajan #INDvsAUS #INDvsAUSTest #indvsaus2020 #IndiavsAustralia— Sagnik Sanyal (@SagnikSanyal9) January 15, 2021Fans praise Washington Sundar after his performanceA lot of questions were raised about the selection of all-rounder Washington Sundar ahead of a specialist spinner Kuldeep Yadav in the lineup.However, it is safe to say that the youngster has done well on his Test debut so far: he was economical throughout the day and picked up the prized wicket of Steve Smith.What a moment for Washington Sundar! His first Test wicket is the superstar Steve Smith! #OhWhatAFeeling@Toyota_Aus | #AUSvIND pic.twitter.com/ZWNJsn0QNN— cricket.com.au (@cricketcomau) January 15, 2021Fans on Twitter enjoyed Sundar's performance and also credited Ravichandran Ashwin for helping the youngster. Here is what they had to say:Tips given by #Ashwin is definitely working!! #sundar what a wicket to get on debut, well done🙌🏻#AUSvIND #INDvAUS #TeamIndia 🇮🇳 https://t.co/ySTz2tmkOF— Amandeep Kaur (@amankaur2625) January 15, 2021💯 ✔️ #nattu #sundar #siraj https://t.co/7LYJNUrZkm— GovardhanReddy (@ReddyDataMining) January 15, 2021If you notice There is an "ASH" hidden in W"ASH"INGTON !😂😭#INDvAUS | #Sundar— Anubhav Chatterjee (@anubhav_8947) January 15, 2021Smith: Thank God..ash not playing in this match Ash: hold my beer..will send my bro #Sundar— saravanan_saro (@SelvamSaravana5) January 15, 2021Fans rue Team India's dropped chancesMarnus Labuschagne was given a couple of lives by India once again today. The 26-year-old has been riding his luck throughout the series.The visitors gave Labuschagne multiple reprieves on the first day, including an absolute sitter dropped by stand-in skipper Ajinkya Rahane at gully.Labuschagne gets a life! 😰Live #AUSvIND: https://t.co/IzttOVtrUu pic.twitter.com/8FoaapsPGe— cricket.com.au (@cricketcomau) January 15, 2021This time, Labuschagne made sure India paid for their mistakes, notching up his fifth Test hundred.Shardul Thakur also dropped Cameron Green later in the day, making a meal of a simple caught and bowled chance.Fans were not impressed by India's fielding on the day and feared the drops could cost them the Test. Here is what they said:If Labushagne wins MoS award, will have to share with Indian team (courtesy all the dropped catches) #indvsausTestmatch @StarSportsIndia #INDvAUS— Venkatesh (@venkysai) January 15, 2021India hanging in there but dropping 3 catches has helped Australia reach a position from where they can eye 400. Tough day for India #INDvAUS— MamkeshBansiwal (@bansiwa1) January 15, 2021Catches hurting India more than lack of players. #INDvAUS— Vishal Mehra (@vishal_mehra1) January 15, 2021Fans react as Navdeep Saini gets added to India's long list of injuriesIndia's ongoing injury woes continued into the fourth Test, as fast bowler Navdeep Saini complained of a groin strain and was taken for scans, reports of which are still awaited.Saini was looking threatening on the Gabba track with his extra pace and bounce. Losing him would be a big blow for India at this point, as they might have to work with only four bowlers for the rest of the Test.UPDATE - Navdeep Saini has now gone for scans.#AUSvIND https://t.co/pN01PVnFfx— BCCI (@BCCI) January 15, 2021Frustrated by India's injury woes, some fans were upset with BCCI's player management. They questioned whether the authorities monitor the workload of the players properly.Here is what the fans had to say:Never seen such an inexperienced bowling line up taking the field in a test match. Siraj being the most experienced man with two tests behind him and Nattu and Washi making their debuts. Still very much this team is gonna fight till the end. #AUSvIND #INDvAUS #GabbaTest— Rajarshi Dasgupta (@rajarshi_15) January 15, 2021Its so bizarre that nearly the whole #TeamIndia squad have injury issues. Either they are ruled out or playing with one. There has to some sort of an explanation of why isn't the players & medical staff taking care of the fitness.#AUSvsIND @BCCI #brisbanetest #INDvAUS #India— Ricky (@rickypatel26) January 15, 2021@BCCI should be made accountable on why there has been so many injuries in Australia tour? If questions are not asked then as usual they will escape. Pathetic injury management#INDvAUS #AUSvIND— Rajdip (@AmRajdip) January 15, 2021New Indian bowlers in final 11 due to experienced players' injury. Perfect analogy with freshers working on production issues without KT when senior team members have moved out of org. #INDvAUS— Piyush (@piyush__tweeter) January 15, 2021#INDvAUS https://t.co/H1VVd3WBDZ— Amit Kurde (@KurdeAmit) January 15, 2021