Grant Flower picked out teenage spinner Archie Lenham as a bright spot of a tough second day for Sussex.

But the batting coach said they have a lot of work to do.

Oli Carter added to his first-day century by moving to a career-best 185 in the opening session.

But a double century partnership between Glamorgan pair Colin Ingram and Eddie Byrom followed on a run-filled day in the LV= Insurance County Championship match.

They both finished the day with undefeated hundreds with Sussex’s first innings lead reduced to 118 and Glamorgan still just one wicket down.

Sussex’s attack looked toothless as they got through eight bowlers but struggled to create chances to take wickets.

Flower said: “We have got a lot of hard work to do in the field.

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“We have got to bowl better than we did (yesterday).

“We bowled better after tea, hit our lengths better.

“I thought Archie Lenham bowled really well.

“He landed it in good areas and at good pace.

“It is a good batting wicket now, it is very flat.

“But I don’t think I have seen us hit the deck hard enough before tea and I think they (the Sussex bowlers) will be the first to admit that.

“And we are going to have to bat really well.”

Glamorgan batsman Colin Ingram said: “I just thoroughly enjoyed it out there today.”