Shaun Miller came off the bench to grab the only goal of the game for Crewe and leave struggling Morecambe looking over their shoulders.
In a poor-quality game, chances were at a premium, with the Shrimpers' Callum Lang missing the visitors' best opening when he failed to convert from close range in the second half.
But Miller made no mistake as he fired a volley into the top corner in the 89th minute to take Crewe to the 50-point mark for the season.
Early on, Jordan Bowery was thwarted by veteran...
Mansfield Town's brave fightback fell just short as they were pipped 4-3 at home by Crewe in an a Sky Bet League Two thriller.
The fading play-off hopefuls are now eight games without a win, but battled hard after finding themselves 4-1 behind in a dismal first-half showing.
James Jones made use of time and space offered on seven minutes to drill home the opener from the edge of the box.
Three minutes later Conrad Logan saved a Jones shot only to see Jordan Bowery on hand to ram home from close range.
Charlie Kirk scored a stoppage-time leveller as Crewe shared derby honours with Port Vale after a thrilling 2-2 League Two draw.
Antony Kay's 71st-minute long-range effort appeared to have won it for Vale as they came from behind after enduring the worst possible start when goalkeeper Ryan Boot gifted Crewe an opener through Ryan Wintle.
Tom Pope levelled from the penalty spot before the break and Kay volleyed in before the late drama.
The opener arrived as James Jones' free-kick slipped out of the...
John Akinde scored two penalties either side of a Harry McKirdy goal to earn Barnet a 2-1 win against Crewe.
Akinde put the hosts ahead from the penalty spot in the 51st minute but they were pegged back in the 71st minute when George Ray looped a header to the back post and McKirdy was able to steer it in.
The match appeared to be heading for a draw but in the 87th minute the Bees won their second penalty of the match and Akinde made no mistake from the spot to revive Barnet's Sky Bet League Two survival...