Tammy Abraham opened the scoring for the visitors with an exquisite finish on 14 minutes.
But Rovers rallied, and Gallagher rose above Mark Little to power a header beyond Frank Fielding to make it 1-1 with 19 minutes left.
That followed on from another crucial result, with Gallagher played 72 minutes of the 1-0 win over fellow strugglers Nottingham Forest before being replaced by Lucas João.
Tommie Hoban’s late header proved the difference on that occasion. Rovers are now two points from safety with three games to play.
Elsewhere, Jason McCarthy helped loan Walsall to pick up four points over the Easter weekend in League One.
On Good Friday, McCarthy played the duration of the 1-1 away draw with Shrewsbury Town.
Kieron Morris nodded the Saddlers ahead on 35 minutes, but in the second-half Stefan Payne earned the hosts a share of the spoils when he headed Shaun Whalley’s cross.
A home clash with Swindon Town followed and Joe Edwards’ late winner earned Jon Whitney’s men a hard-fought 1-0 win, with McCarthy playing the full game.
There was further success in Spain as Paulo Gazzaniga kept a clean sheet in Rayo Vallecano’s 1-0 win over UCAM Murcia.
Javi Guerra’s solitary strike was enough for the visitors, who now sit 15th in Segunda División.
Tottenham forward Heung-Min Son has topped the Sky Sports Power Rankings for a second week running.
Team-mates Dele Alli (No 5, down three places), Christian Eriksen (No 6, up one place) and Hugo Lloris (No 10, up nine places) also made the top 10 after Spurs won their seventh successive league game with a 4-0 victory over Bournemouth.
Meanwhile, Mousa Dembele (No 12, up 16 places), Eric Dier (No 13, down five places), Jan Vertonghen (No 15, up nine places) and Ben Davies (No 20, up six places) also represented Tottenham in the top 20.
League leaders Chelsea saw their lead at the top of the Premier League table slashed to four points following a 2-0 defeat to Manchester United at Old Trafford.
In fact, Tottenham have nearly three times the number of Power Ranking points than their London rivals - proving Spurs are the team in ascent with just six games left to play.
Liverpool and Manchester City both won at the weekend in their battles to secure a top-four finish against West Brom and Southampton, respectively.
Reds duo Philippe Coutinho (No 9, down five places) and Roberto Firmino (No 3, up six places) made the top 10, while Sergio Aguero (No 8, up five places) was City’s only player to make to make the top 30.
Everton’s Phil Jagielka almost topped the table this week after scoring in his third consecutive game during the Toffees’ 3-1 win over Burnley, with Romelu Lukaku (No 4, up two places) maintaining his place among the top performers.
Crystal Palace striker Christian Benteke (No 7, up nine places) all but sealed the Eagles’ Premier League status for next season with an equalising goal to salvage a point against Leicester on Saturday.
The Power Rankings methodology reflects a player’s performance over the last five matchdays by awarding points to players for 32 different stats.
Below, we present this week’s Power Rankings, your club’s top points scorer and the accumulative season rankings.
The Sky Sports Power Rankings will be updated every Tuesday during the season, so be sure to keep an eye on the big movers…
Sky Sports has picked six stunning saves from the Premier League weekend and put them together in one place for you to enjoy.
Our selection includes Lee Grant’s stop for Stoke from Lazar Markovic, Swansea goalkeeper Lukasz Fabianski’s tip over the bar from Troy Deeney and some sterling work from Burnley stopper Tom Heaton in their game against Everton.
Hull goalkeeper Eldin Jakupovic makes the cut for his save from Jon Walters’ header and Peter Crouch’s rebound, plus Fraser Forster’s save for Southampton from Manchester City’s Jesus Navas.
A fine Nissan Super Sunday save also makes the grade - Simon Mignolet denying West Brom’s Matt Phillips near the end of Liverpool’s 1-0 win at The Hawthorns.
| Could Chinese Takeover Bid Still Be On ! | On Sunday Lander Sports issued a statement saying that they were pulling out of buying Saints, however now they are … 18-04-2017 |
The event is one of the highlights of the season, and will consist of a four-course fine dining menu, entertainment and, of course, the prestigious annual awards ceremony.
Taking place on Thursday 4th May, 6.15pm at St Mary’s Stadium and hosted by Ed Chamberlin, the evening will provide a fantastic opportunity to look back at the 2016/17 campaign and relive some of the more memorable moments from the last year.
Prices start at £180 + vat per person for a standard seat, and £215 + vat per person for a player-hosted seat, which are now extremely limited.
Places for this event are highly sought after, so we recommend registering your interest by filling in the below form should you wish to attend this year’s event or getting in touch by calling 02380 727 768 or emailing clubsouthampton@saintsfc.co.uk.