The visitors managed to extend their second innings from an overnight 66 for 1 to 311 for 8, the rock-solid Whiteman leading from the front with an unbeaten 130, off 269 balls, with 14 fours and a six
Taunton (final day of four): Northamptonshire 257 & 311-8, Somerset 412 - match drawn
Skipper Sam Whiteman's first Northamptonshire century saw his side to safety on the final day at Taunton.
The visitors managed to extend their second innings from an overnight 66 for 1 to 311 for 8, the rock-solid Whiteman leading from the front with an unbeaten 130, off 269 balls, with 14 fours and a six.
The Yorkshire-born Australian left-hander, in his first season as a Championship player, batted throughout the day, receiving excellent support from Tom Taylor, who contributed 53 to an eighth-wicket stand of 79 that finally frustrated a Somerset attack, who gave their all on an unhelpful pitch.
By the time the players shook hands at 5.40pm, Northamptonshire had a lead of 154, with a possible 11 overs remaining. They took nine points from the rain-affected contest, while Somerset, yet to win this season, claimed 12.
The home bowlers expected to have to toil for every wicket as Northamptonshire began the day needing 91 to avoid an innings defeat, with nine wickets in hand.
Somerset's Kasey Aldridge [Getty Images]
So it proved, on a pitch which had offered little in the way of seam movement or turn on day three. The opening attack of Craig Overton and Lewis Gregory went past the bat several times early on, but Whiteman and nightwatchman Jordan Buckingham survived and started to look increasingly comfortable.
Buckingham marked his Northamptonshire debut with an invaluable contribution, sharing a half-century stand with his skipper and facing 66 balls before being bowled advancing down the pitch to Leach.
By then Whiteman had reached a 104-ball fifty, with five fours and a six over midwicket off Leach. More importantly, 20 overs of the day had elapsed before Somerset made the breakthrough.
There was no shortage of effort or accuracy from the bowlers. Jack Leach struck another blow when Hassan Azad, who had retired hurt with a hand injury the previous evening, offered a low return catch, having made only 4.
It was 147 for 3 at lunch, with Northamptonshire still 10 runs behind. A Saif Zaib reverse sweep off Leach early in the afternoon session levelled the scores.
A draw was looking increasingly likely. But, having moved confidently to 33, Zaib carelessly lifted a ball from Overton to fine leg where Leach held a testing catch.
At 174 for 4, Northants were only 17 in front. But Whiteman was well set and a pulled boundary off Gregory brought up the 200.
With a further 10 added, Rob Keogh, on 14, failed to keep down a leg glance off Kasey Aldridge and Gregory held a sharp catch at backward short leg.
Sam Whiteman on his way to a hundred for Northamptonshire [Getty Images]
It was 211 for 6 when a thinner glance saw James Sales depart for 1 to Gregory, wicketkeeper James Rew diving full length to his left to hold a one-handed catch inches off the ground.
Harry Gouldstone quickly followed for a duck to another fine catch, this time by Tom Kohler-Cadmore at first slip, his task made more difficult by Overton diving in front of him to try and take the ball at second slip.
The lead was only 62. But Whiteman had just completed his hundred, a study in concentration occupying 179 balls, and found a more reliable partner in Taylor, who helped take the score to 254 for 7 at tea.
Somerset's last hope was the second new ball, available one over after the interval. A chance slipped by with three runs added as Cameron Bancroft failed to hold a low catch offered to his left at second slip by Taylor, on 30, off Gregory.
It was an error the hosts could not afford. Taylor progressed to a 96-ball half-century, with eight fours and a six, and by the time he was well caught by Rew down the legside to give the tireless Peter Siddle his first wicket, the lead was 141.
But it was Whiteman's day. Unbeaten on 29 at the start of play, by the close he had occupied the crease for more than six and three-quarter hours, offering just one difficult chance to slip off Leach with the draw all but secured.
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