Marsh (Jr) strocked 60 off 43 balls and while Sanga clobbered 25-ball 50 as Mohali hunted down the 176-run victory target in 19.3 overs with six wickets in hand.
Marsh's fifth half-century was studded with three hits to fence and as many over it while the comeback man carved his knock with seven boundaries and two sixes.
The duo set the tone for Mohali with a rapidfire 84-run stand for opening wicket.
Disciplined effort from the batters up front helped Hyderabad Deccan Chargers post a healthy 176/4 in their nothing-for-stake tie.
Gilchrist (50 off 42) and Gibbs (44 in 34) got Hyderabad off to a brisk start with 79-run stand in 11 overs. The classy Rohit Sharma consolidated it with a neat 27-ball 50. Chamara Silva chipped in with useful little comeo to ensure Hyderabad post a fighting total.
The wily off Powar bowled a teasing spell to return with 1/20.
The local outfit chasing a competitive target got the dream start. Openers Marsh and Sanga batted to a plan scoring a boundary or two and then milking the ball in gaps for a single or brace. Marsh sent the Hyd ace bowler RP out of the attack in the very first over hitting the clueless seamer for a six and four.
Sanga not to be left behind made hay against Vijaykumar and the change bowlers Venu and Styris. The three combined conceded as many as 85 runs in eight overs.
The left-hand duo scored bulk of runs with proper cricketing shots. They made most of the power-play with a flurry of lofted shots in the no-man's land en route to fence.
Gilly desperate to break the partnership introduced, Rohit, a part-time offie, in the eighth over and the change worked. Sanga trying to hoist a short of length ball over long-off finds his fellow countryman Chamara Silva and Silva gleefully held on to it.
Marsh joined by Yuvi take Mohali past 100 in the 10th over. They share a quickfire 32 -run stand before Marsh conceded his wicket to Styris.
Hyd battled back thro left-arm spinner Pragyan Ojha. Ojha struck twice to send Yuvi and Pomersbach in quick succession to reduce Mohali to 149/4 in 17th over. Jayawardene and Chawla ensured no further damage as Mohali romped home with three balls to spare.
Deccan Chargers' opening duo, who had a quiet tournament so far, did not falter this time though. Gibbs played a fluent innings from the word go while his partner Gilchrist looked uncomfortable in the early part of his innings. His timing and footwork was not so impeccable but was determined to score a big one. However he soon found his groove cutting RP to point fence and then off-drove to bisect the mid-off and covers fielders to the fence. Gilly hit six boundaries and a six in his 42-ball knock.
Gibbs set the early pace by flicking Sreesanth to fine-leg boundary followed it up with a glance and cut to the fence - all in one over. Deccan Chargers raced to 50 in 7.1 overs.
However the slow-bowlers Powar and Chawla kept the Hyd opening pair in check for couple of overs before Gibbs broke the ice dumping a flighted one from Powar in stand and lofted Chawla over long-on and long-off for the same results. Gibbs trying one too many lost his wicket after a knee length ball from Gagandeep rearrenged his stumps.
The in-form Rohit Sharma joined Gilly in the middle and the duo struggled to negotiate Powar, who tied down the batsmen with a teasing line and length. Yuvraj introduced himself to bowl the 14th over eased off the pressure on Rohit and Gilly conceding as many as 18 runs in a one-off over he bowled as Hyderabad surged past 100.
In the following over Powar castled Gilly besides conceding only two runs. Rohit continued his good run in the event playing some conventional shots all-round the park. This youngster while in full flow is a treat to watch. What makes this batsman from Mumbai stand apart from others is his exceptional timing, temperament and footwork.
However he has that uncanny habit of throwing his wicket for a fancy shot after all the hard work he does. His 27-ball innings was inclusive of three boundary hits and four sixes. Chamara Silva scored some brisk runs in the death overs.