Scotland's Catriona Matthew made an impressive start to the ANA Inspiration and was sitting just one shot off the lead after the first round of 2016's first major.

The 46-year-old former Women's British Open champion made headway in the back nine after making the turn on level par as she struck four birdies to card a four-under-par 68.

She was inches away from being level with joint leaders Azahara Munoz and Ai Miyazto on five under as she almost holed a fantastic approach shot at the par 5 18th for an eagle, but had to settle for a birdie.

Spaniard Munoz would have stood alone at the top of the leaderboard had it not been for a bogey on the 18th hole, the only blemish on her otherwise impressive card, while Miyazto did go round without bogeying.

England's Charley Hull finished with back-to-back birdies to card a two-under 70, the same score which world number one Lydia Ko and Michelle Wie recorded.

Miyazto said: "Today I hit the ball well and my putting was really good. I had good control and was happy that I played well. I had a good start and in the middle of the round, I started hitting it everywhere, but I had some good up and downs. I enjoyed every moment. There is tonnes of golf left, I just need to keep it going."