The rupee opened lower against the US dollar at 72.03 on Friday, and declined by as much as 51 paise to hit 72.17 in morning deals. That marked the lowest intraday level recorded for the rupee so far in calendar year 2019. Analysts say weakness across emerging market currencies with the Chinese yuan hitting an 11-year low put pressure on the rupee. Weakness in international oil prices however provided some support to the rupee and limited its downside.