MPLX LP (MPLX) reported first-quarter earnings of 98 cents per unit, which missed the Zacks Consensus Estimate of 99 cents. The bottom line, however, increased from the year-ago quarter’s figure of 91 cents. Total quarterly revenues of $2.85 billion missed the Zacks Consensus Estimate of$2.93 million. However, the top line increased from the prior-year quarter’s level of $2.71 billion. The underperformance can be attributed to decreased total pipeline throughputs and higher operating expenses. Segmental Hi ...